Terms from Punic Wars to Richard Cox
- Punic Wars
- Punjab (India)
- Punjab (Pakistan)
- Punk Rock
- Punt, Land Of
- Punta Arenas
- Pupa
- Puppetry
- Puppis ((Lat ‘ship's stern’))
- Puranas
- Purchase Tax
- Purchasing Power Parity (PPP)
- Pure Land Buddhism
- Purgatory
- Purim
- Purines
- Purism
- Puritanism
- Purple Heart
- Purpura
- Purslane
- Pus
- Pusan Or Busan
- Pushmataha Biography (?1764–1824)
- Puss Moth
- Putrefaction
- Putten
- Putty
- Puyyut (Greek ‘poietes’‘a maker’or ‘poet’)
- Pyelonephritis
- Pygmalion
- Pygmies
- Pygmy Owl
- Pylon (ancient)
- Pylon (modern)
- Pylos
- Pyongyang (Jap Heijo)
- Pyotr Leonidovich Kapitza Biography (1894–1984)
- Pyralid Moth
- Pyramid
- Pyramid Healing
- Pyramids
- Pyramus And Thisbe
- Pyrenean Mountain Dog
- Pyrenees (Fr PyrénéesSpan Pirineos)
- Pyrenees, Treaty Of The
- Pyrethrum
- Pyrex®
- Pyridine
- Pyridoxine
- Pyrimidines
- Pyrite
- Pyroclastic Rock
- Pyroelectrics
- Pyrolysis
- Pyrometer
- Pyroxenes
- Pyrrho Biography (c.360–c.270 BC)
- Pyrrhus Biography (c.318–272 BC)
- Pyruvic Acid
- Pythagoras Biography (6th-c BC)
- Pythagoras's Theorem
- Pytheas Biography (4th-c BC)
- Pythian Games
- Python
- Pyx
- Pyxis ((Lat ‘compass’))
- Päijänne, Lake
- Pär (Fabian) Lagerkvist Biography (1891–1974)
- Père David's Deer
- Père Hyacinthe Biography (1827–1912) (originally Charles Loyson)
- Père Joseph Biography (1577–1638) (known as l'Eminence grise (‘Grey Eminence’)originally François Joseph le Clerc du Tremblay)
- Pécs (Ger FünfkirchenLat Sopianae)
- Périgord
- Périgueux (anc Vesuna)
- Pío Baroja (y Nessi) Biography (1872–1956)
- Q Fever
- Qaboos Bin Said Biography (1940– )
- QALY
- Qatar
- Qazvin (also spelled Kazvin)
- Qianlong Biography (1711–99) (also spelled Ch'ien-Lung)
- Qin Dynasty Or Ch'in Dynasty
- Qin Shihuangdi Biography (259–210 BC) (also spelled Ch'in Shih Huang-ti)
- Qing Dynasty
- Qingdao, Tsingtao, Or Ch'ing-tao
- Qinghai Hu
- Qinhuangdao Or Ch'in-huang-tao
- Qom
- Qu Yuan Or Chü Yüan
- Quadragesima
- Quadrature
- Quadrature Of The Circle
- Quadrilatero ((Eng ‘quadrilateral’))
- Quadrille
- Quadrophonic Sound
- Quadruple Alliance (1718)
- Quadruple Alliance (1815)
- Quaestors
- Quagga
- Quai D'Orsay
- Quail
- Quaking Grass
- Quality Circles
- Qualunquismo
- Quanah Biography (?1845–1911) (known as Parker Quanah)
- Quango
- Quantity Theory Of Money
- Quantum Chromodynamics
- Quantum Computer
- Quantum Electrodynamics
- Quantum Entanglement
- Quantum Field Theory
- Quantum Gravity
- Quantum Hall Effect
- Quantum Mechanics
- Quantum Numbers
- Quantum Statistical Mechanics
- Quantum Teleportation
- Quantum Tunnelling
- Quantum Well
- Quarantine
- Quark
- Quark XPress®
- Quark–gluon Plasma
- Quarrie, Don (popular name of Donald O'Reilly Quarrie)
- Quarrying
- Quarter Horse
- Quarter-day
- Quartz
- Quartzite
- Quasar
- Quasi-crystals
- Quasi-particles
- Quassia
- Quaternary Period
- Quaternions
- Quatre-Bras, Battle Of
- Qubit
- Quebec (city) (Fr Québec [kaybek])
- Quebec (province) (Fr Québec [kaybek])
- Quechua
- Queen Adelaide Biography (1792–1849)
- Queen Alexandra Biography (1844–1925)
- Queen Anne Style
- Queen Anne's War
- Queen Charlotte Islands (Haida G'waii)
- Queen Elizabeth Islands
- Queen Maud Land (Norwegian Dronning Maud Land)
- Queen Of Scots Mary Biography (1542–87)
- Queen Of Sheba Biography (c.10th-c BC)
- Queen Victoria Water Lily
- Queen's Award
- Queen's Counsel (QC)
- Queens
- Queensland
- Quelea
- Queluz
- Quentin (Jerome) Tarantino Biography (1963– )
- Quentin (Saxby) Blake Biography (1932– )
- Quentin Massys Or Matsys Biography (c.1466–c.1530)
- Quentin Reynolds Biography (1902–65)
- Querido
- Query Language
- Querétaro
- Quett (Ketumile Joni) Masire Biography (1925– )
- Quetta
- Quetzal
- Quetzalcoatl
- Quezaltenango (or Xela [shayla])
- Quezon City
- Quiet Revolution
- Quietismo (Eng ‘quietism’)
- Quill
- Quillwort
- Quimper (or Quimper Corentin)
- Quince
- Quincy (Illinois)
- Quincy (Massachusetts)
- Quinine
- Quinoline
- Quinone
- Quinquagesima
- Quinsy
- Quinteto ((Eng ‘five-line verse'))
- Quintilian Biography (c.35–c.100) (in full Marcus Fabius Quintilianus)
- Quintilla ((Eng ‘five-line verse’))
- Quintin Hogg Biography (1845–1903)
- Quintino Sella Biography (1827–84)
- Quintus Ennius Biography (c.239–169 BC)
- Quintus Fabius Maximus Biography (c.260–203 BC) (known as Fabius Cunctator (Lat ‘the delayer’))
- Quintus Sertorius Biography (123–72 BC)
- Quipu
- Quirigua
- Quirinal
- Quirinus Kuhlmann Biography (1651–89)
- Quit India Movement
- Quito
- Qumran, Community Of
- Quoits
- Quota (IMF)
- Quota (OPEC)
- Quotas, Import
- Qur'an Or Koran
- Qutb Minar Or Kutab Minar
- QwaQwa
- R Norris Shreve Biography (1885–1975)
- R(alph) H(ale) Mottram Biography (1883–1971)
- R(asipuram) K(rishnaswami) Narayan Biography (1906–2001)
- R(aymond) C(ecil) Moore Biography (1892–1974)
- R(aymond) W(ilson) Chambers Biography (1874–1942)
- R(eginald) J(oseph) Mitchell Biography (1895–1937)
- R(ichard) B(evin) Braithwaite Biography (1900–90)
- R(ichard) Buckminster Fuller Biography (1895–1983) (known as Bucky)
- R(ichard) D(oddridge) Blackmore Biography (1825–1900)
- R(ichard) L(aurence) M(illington) Synge Biography (1914–94)
- R(ichard) P(almer) Blackmur Biography (1904–65)
- R(obert) Bruce Merrifield Biography (1921–2006)
- R(obert) C(edric) Sherriff Biography (1896–1975)
- R(obert) Crumb Biography (1943– )
- R(obert) F(alcon) Scott Biography (1868–1912)
- R(obert) G(raham) Dun Biography (1826–1900)
- R(obert) M(ichael) Ballantyne Biography (1825–94)
- R(obert) Nathaniel Dett Biography (1882–1943)
- R(obert) R(oswell) Palmer Biography (1909– )
- R(obert) S(tephen) Hawker Biography (1803–75)
- R(obin) G(eorge) Collingwood Biography (1889–1943)
- R(onald) B(rooks) Kitaj Biography (1932– )
- R(onald) D(avid) Laing Biography (1927–89)
- R(onald) S(almon) Crane Biography (1886–1967)
- R(onald) S(tuart) Thomas Biography (1913–2000)
- R(udolph) C(arl) Gorman Biography (1931–2005)
- R(udolph) M(ichael) Schindler Biography (1887–1953)
- Raad Van State
- Raadspensionaris (Eng Grand Pensionary)
- Rab (ancient Arba)
- Rabat (Malta)
- Rabat (Morocco)
- Rabban Johanan Ben Zakkai Biography (1st-c)
- Rabban Sauma Biography (c.1225–c.1300)
- Rabbi ((Heb ‘my lord’or ‘my master/teacher’))
- Rabbit
- Rabies
- Rabindranath Tagore Biography (1861–1941)
- Raccoon
- Raccoon Dog
- RACE
- Race
- Rachel
- Rachel (Louise) Carson Biography (1907–64)
- Rachel Crothers Biography (1878–1958)
- Rachel Donelson Robards Jackson Biography (1767–1828)
- Rachel Heyhoe Flint Biography (1939– )
- Rachel Whiteread Biography (1963– )
- Rachis Biography (d.c.757) (also found as Rachi)
- Racial Discrimination
- Racism
- Rackets (UK) / Racquets (US)
- Rad
- Radar
- Radar Astronomy
- Radbod Biography (d.719)
- Radian
- Radiation
- Radiation Sickness
- Radical
- Radicalism
- Radiesthesia
- Radio
- Radio Astronomy
- Radio Beacon
- Radio Broadcasting (computing)
- Radio Galaxy
- Radio Oranje
- Radio Waves
- Radio-immunoassay
- Radioactive Fallout
- Radioactive Tracer
- Radioactive Waste
- Radioactivity
- Radioactivity Units
- Radiobiology
- Radiocarbon Dating
- Radiochemistry
- Radiogram
- Radiography
- Radioisotope
- Radioisotope Thermo-electric Generator (RTG)
- Radiolaria
- Radiometric Dating
- Radiometry
- Radionics
- Radiosonde (radiosounding) Balloon
- Radiotherapy
- Radish
- Radium
- Radon
- Radovan Karadžić Biography (1945– )
- Rafael (Jeronym) Kubelík Biography (1914–96)
- Rafael Azcona Biography (1926– )
- Rafael García-Plata De Osma Biography (1870–1918)
- Rafael Ginard Bançà Biography (1899–1976)
- Rafael Hernández Biography (1892–1965)
- Rafael Leonidas Trujillo (Molina) Biography (1891–1961)
- Rafael Lorente De No Biography (1902–90)
- Rafael Nadal Biography (1986– ) (in full Rafael Nadal-Pareranickname Rafa)
- Rafael Romero Biography (1886–1925) (pseudonym Alonso Quesada)
- Rafael Sabatini Biography (1875–1950)
- Rafael Sánchez Mazas Biography (1894–1966)
- Rafaela Aparicio Biography (1906–96) (stage name of Rafaela Díaz Valiente)
- Rafer (Lewis) Johnson Biography (1934– )
- Raffaele Cadorna Biography (1889–1973)
- Raffia Palm
- Rafflesia
- Raga
- Ragged Robin
- Ragged School
- Ragnar (Anton Kittil) Frisch Biography (1895–1973)
- Ragnar (Arthur) Granit Biography (1900–91)
- Ragnarök
- Ragtime
- Ragworm
- Ragwort
- Rahere Biography (?–1144)
- Rahsaan Roland Kirk Biography (1936–77) (originally Ronald T Kirk)
- Rail
- Rail Gun
- Rail Gun (SDI)
- Railway
- Railway Signalling
- Raimondo Montecuccoli Biography (1609–80)
- Raimu Biography (1883–1946) (stage name of Jules Auguste César Muraire)
- Raimundo Biography (1124–51)
- Rain Gauge
- Rainald Von Dassel Biography (1120–67)
- Rainbow
- Rainbow Snake
- Rainer (Candidus) Barzel Biography (1924–2006)
- Rainer Eppelmann Biography (1943– )
- Rainer Kirsch Biography (1934– )
- Rainer Maria Rilke Biography (1875–1926)
- Rainer Werner Fassbinder Biography (1946–82)
- Rainfall
- Rainforest
- Rainier III Biography (1923–2005) (in full Rainier Louis Henri Maxence Bertrand de Grimaldi)
- Rainier, Mount
- Raisins
- Rajah Or Raja
- Rajasthan
- Rajendra Prasad Biography (1884–1963)
- Rajiv Gandhi Biography (1944–91)
- Rakoczi
- Raleigh
- Ralliement, Le
- Rally
- Ralph (Albert) Blakelock Biography (1847–1919)
- Ralph (Asher) Alpher Biography (1921– )
- Ralph (Edward) Flanders Biography (1880–1970)
- Ralph (Hall) Brown Biography (1898–1948)
- Ralph (Harold) Metcalfe Biography (1910–78)
- Ralph (Nathaniel) Fiennes Biography (1962– )
- Ralph (Stefan) Solecki Biography (1917– )
- Ralph (Stockman) Tarr Biography (1864–1912)
- Ralph (Waldo) Ellison Biography (1914–94)
- Ralph (Walter Greystone) Wyckoff Biography (1897–1994)
- Ralph Adams Cram Biography (1863–1942)
- Ralph Allen Biography (?1694–1764) (known as the Man of Bath)
- Ralph Barton Biography (1891–1931)
- Ralph Barton Perry Biography (1876–1957)
- Ralph Benatzky Biography (1884–1957)
- Ralph Boston Biography (1939– )
- Ralph Burns Biography (1922–2001)
- Ralph Cudworth Biography (1617–88)
- Ralph D(avid) Abernathy Biography (1926–90)
- Ralph De Coggeshall Biography (?–c.1227)
- Ralph Dwight DeNunzio Biography (1931– )
- Ralph Earl Or Earle Biography (1751–1801)
- Ralph Fasanella Biography (1914– )
- Ralph H(erbert) Turner Biography (1919– )
- Ralph Hammond Innes Biography (1913–98)
- Ralph Hayward Isham Biography (1890–1955)
- Ralph Hodgson Biography (1871–1962)
- Ralph Hosea Chaplin Biography (1887–1961)
- Ralph Izard Biography (1742–1804)
- Ralph J(ohnson) Bunche Biography (1904–71)
- Ralph Jarron Cordiner Biography (1900–73)
- Ralph Lauren Biography (1939– ) (originally Ralph Lifshitz)
- Ralph Linton Biography (1893–1953)
- Ralph Manheim Biography (?1907–92)
- Ralph Nader Biography (1934– )
- Ralph Robert Shaw Biography (1907–72)
- Ralph Royce Biography (1890–1965)
- Ralph Sarich Biography (c.1939– )
- Ralph Thomas Walker Biography (1889–1973)
- Ralph Vaughan Williams Biography (1872–1958)
- Ralph Waldo Emerson Biography (1803–82)
- RAM
- Ram Singh Biography (1816–85)
- Ramadan
- Ramakrishna Biography (1836–86) (originally Gadadhar Chatterjee)
- Raman Scattering
- Ramana Maharishi Biography (1879–1950) (also known as Sri Ramana and Sri Bhagavan)
- Ramanuja Biography (traditionally c.1017–1137)
- Ramayana
- Rambert Dance Company
- Ramblers' Association
- Rameses Or Ramses II Biography (13th-c BC) (known as the Great)
- Rameses Or Ramses III Biography (12th-c BC)
- Ramiro De Maetzu Biography (1874–1936)
- Ramiz Alia Biography (1925– )
- Ramjet
- Rammohun Roy Or Raja Ram Mohan Rai Biography (1774–1833)
- Ramon Amadeu I Grau Biography (1745–1821)
- Ramon Casas I Carbó Biography (1866–1932)
- Ramon Guthrie Biography (1896–1973)
- Ramon Muntaner Biography (1265–1336)
- Rampjaar
- Ramsay MacMullen Biography (1928– )
- Ramsey (William) Clark Biography (1927– )
- Ramsgate
- Ramón Abadal Y De Viñals Biography (1888–1970)
- Ramón Cabanillas Enríquez Biography (1873–1959)
- Ramón Ledesma Miranda Biography (1901–63)
- Ramón Llull Or Lull Biography (c.1235–1315) (Eng Raymond Lullyknown as the Enlightened Doctor)
- Ramón López Soler Biography (1806–36)
- Ramón Ortega Y Frías Biography (1825–83)
- Ramón Pérez De Ayala Biography (1881–1962)
- Ramón Sergio Hernández De Soto Biography (1845–1921)
- Ranald MacDonald Biography (1824–94)
- Ranasinghe Premadasa Biography (1924–93)
- Rancagua
- Rancidity
- Randall Jarrell Biography (1914–65)
- Randall Robinson Biography (1946– )
- Randall Thompson Biography (1899–1984)
- Randolfo Pacciardi Biography (1899–1991)
- Randolph (Frederick Edward Spencer) Churchill Biography (1911–68)
- Randolph (Silliman) Bourne Biography (1886–1918)
- Randolph Caldecott Biography (1846–86)
- Randolph Rogers Biography (1825–92)
- Randolph Turpin Biography (1925–66)
- Random Number
- Random Processes
- Randomized Controlled Trial
- Randstad
- Randy Newman Biography (1943– ) (popular name of Randall Stuart Newman)
- Range-finder
- Ranger Programme
- Ranji
- Ranjit Singh Biography (1780–1839) (known as the Lion of the Punjab)
- Ransom (Eli) Olds Biography (1864–1950)
- Ransom R Cable Biography (1834–1909)
- Ransoms
- Ranulf De Glanvill Biography (?–1190)
- Ranulph Higden Biography (c.1280–1364)
- Raoul Bott Biography (1923–2005)
- Raoul Dufy Biography (1877–1953)
- Raoul Wallenberg Biography (1912–? 47)
- Rap Music
- Rapallo, Treaties Of
- Rape (botany)
- Rape (law)
- Raphael Biography (1483–1520) (in full Raffaello Sanzio)
- Raphael Holinshed Biography (?–c.1580)
- Raphael Pumpelly Biography (1837–1923)
- Raphael Semmes Biography (1809–77)
- Raphael Soyer Biography (1899–1987)
- Raphaelle Peale Biography (1774–1825)
- Rapid Application Development (RAD)
- Raquel Welch Biography (1940– ) (originally Raquel Tejada)
- Ras Al-Khaimah
- Ras Shamra Texts
- Rasmus (Kristian) Rask Biography (1787–1832)
- Raspberry
- Rassengesetze
- Rastafarianism
- Raster
- Raster Graphics
- Rat
- Rat Kangaroo
- Rat-tail
- Ratana Church
- Ratel
- Rates
- Rathlin Island
- Ratio Of Specific Heats
- Rational-emotive Therapy
- Rationalism (architecture)
- Rationalism (philosophy)
- Ratitae ((Lat ratis ‘raft’))
- Ratnapura (known as the ‘city of gems’)
- Rattan Palm
- Rattlesnake
- Ratu Sir Josefa Lalabalavu Vanaaliali Sukuna Biography (1888–1958)
- Raul Alfonsín (Foulkes) Biography (1927– )
- Raul Gonzalez Blanco Biography (1977– )
- Raul Julia Biography (1944–94)
- Raven
- Ravenna
- Ravi (Riverancient Hydraotes)
- Ravi Shankar Biography (1920– ) (popular name of Robindra Shankar)
- Rawalpindi
- Ray
- Ray Blanton Biography (1930– )
- Ray Charles Biography (1930–2004) (originally Ray Charles Robinson)
- Ray Lyman Wilbur Biography (1875–1949)
- Ray Stannard Baker Biography (1870–1946)
- Ray Tomlinson Biography (1941– )
- Ray(mond A) Kroc Biography (1902–84)
- Ray(mond Clarence) Ewry Biography (1873–1937)
- Ray(mond Douglas) Bradbury Biography (1920– )
- Ray(mond Evenor) Lawler Biography (1921– )
- Ray(mond Russell) Lindwall Biography (1921–96)
- Ray(mond Wallace) Bolger Biography (1904–87)
- Ray(mond William) Schalk Biography (1892–1970) (nickname Cracker)
- Ray(mond) Cooney Biography (1932– )
- Ray(mond) Illingworth Biography (1932– )
- Ray(mond) McAnally Biography (1926–89)
- Ray(mond) Reardon Biography (1932– )
- Rayleigh Scattering
- Raymond (-Claude-Ferdinand) Aron Biography (1905–83)
- Raymond (Ames) Spruance Biography (1885–1969)
- Raymond (Arthur) Dart Biography (1893–1988)
- Raymond (Charles) Moley Biography (1886–1975)
- Raymond (Edward) Brown Biography (1928– )
- Raymond (Edwards) Gram Swing Biography (1887–1968)
- Raymond (Fernand) Loewy Biography (1893–1987)
- Raymond (Hart) Massey Biography (1896–1983)
- Raymond (Lee) Ditmars Biography (1876–1942)
- Raymond (Nicolas Landry) Poincaré Biography (1860–1934)
- Raymond (Redvers) Briggs Biography (1934– )
- Raymond (Thornton) Chandler Biography (1888–1959)
- Raymond (Vahan) Damadian Biography (1936– )
- Raymond A(rthur) Hare Biography (1901–94)
- Raymond B(ernard) Cattell Biography (1905–98)
- Raymond Barre Biography (1924– )
- Raymond Burr Biography (1917–93)
- Raymond C Kurzweil Biography (1948– )
- Raymond Carver Biography (1938–88)
- Raymond Duchamp-Villon Biography (1876–1918)
- Raymond G(eorge) Herb Biography (1908–96)
- Raymond Hanson Biography (1913–76)
- Raymond Leslie Buell Biography (1896–1946)
- Raymond M(athewson) Hood Biography (1881–1934)
- Raymond Queneau Biography (1903–76)
- Raymond Radiguet Biography (1903–23)
- Raymond Rubicam Biography (1892–1978)
- Raymond Williams Biography (1921–88)
- Rayon
- Razor Shell
- Razorbill
- Re (or Ra [rah])
- Reactance
- Reaction Time (RT)
- Reactive Armour
- Reading (UK)
- Reading (USA)
- Readymade
- Real Academia Española De La Lengua Or La Academia (Eng Royal Spanish Language Academy)
- Real Balances
- Real Madrid
- Real Presence
- Real Tennis
- Real-time Computing
- Realism (art And Literature)
- Realism (philosophy Of Science)
- Realism (philosophy)
- Realismo ((Eng ‘realism’))
- Realismus
- Reasoning
- Rebecca (Diane) Wright Biography (1947–2006)
- Rebecca Gratz Biography (1781–1869)
- Rebecca Harding Davis Biography (1831–1910) (née Rebecca Blaine Harding)
- Rebecca Nurse Biography (1621–92) (née Towne)
- Rebecca Riots
- Rebecca Webb Lukens Biography (1794–1854) (née Pennock)
- Rebekah Bettelheim Kohut Biography (1864–1951)
- Rebellions Of 1837
- Rebirthing
- Rebus
- Receptacle
- Receptors
- Recession
- Recessive
- Recife
- Reciprocity
- Recitative
- Recombinant DNA
- Recommended Daily Allowance (RDA)
- RECONSAT
- Reconstruction
- Reconstruction (linguistics)
- Record Player
- Recorder (law)
- Recorder (music)
- Rectifier
- Rector
- Rectum
- Recycling
- Red Adair Biography (1915–2004) (popular name of Paul Neal Adair)
- Red Admiral
- Red Algae
- Red Allen Biography (1908–67) (originally Henry James Allen)
- Red Army (China)
- Red Army (USSR)
- Red Auerbach Biography (1917–2006) (popular name of Arnold Jacob Auerbach)
- Red Barber Biography (1908–92) (popular name of Walter Lanier Barber)
- Red Blaik Biography (1897–1989) (popular name of Earl (Henry) Blaik)
- Red Brigade (Ital Brigate Rosse)
- Red Buttons Biography (1919–2006) (originally Aaron Chwatt)
- Red Cedar
- Red Cloud Biography (1822–1909) (originally Makhpiya-luta)
- Red Cross
- Red Currant
- Red Deer
- Red Dwarf
- Red Fox
- Red Giant
- Red Grange Biography (1903–91) (popular name of Howard Edward Grangenickname the Galloping Ghost)
- Red Grooms Biography (1937– ) (popular name of Charles Roger Grooms)
- Red Grouse
- Red Guards
- Red Mullet
- Red Norvo Biography (1908–99) (originally Kenneth Norville)
- Red River (China) (Chin Yuan JiangVietnamese Song Hong)
- Red River (USA)
- Red River Colony
- Red River Rebellion
- Red Rum
- Red Sea (ancient Sinus Arabicus)
- Red Skelton Biography (1913–97) (popular name of Richard Bernard Skelton)
- Red Smith Biography (1905–82) (popular name of Walter Wellesley Smith)
- Red Square
- Red Squirrel
- Red Terror
- Red-brick Universities
- Red-hot Poker
- Redd Foxx Biography (1922–91) (originally John Elroy Sanford)
- Redding
- Redemption
- Rederijkers
- Redondilla ((Eng ‘roundelay’))
- Redouté Biography (1759–1840)
- Redpoll
- Redshank
- Redshift
- Redstart
- Reduced Instruction Set Computer (RISC)
- Reducing Agent
- Reduction
- Reductionism
- Redundancy
- Redwing
- Redwood
- Reed
- Reed (Owen) Smoot Biography (1862–1941)
- Reed Instrument
- Reed Organ
- Reed Warbler
- Reedbuck
- Reedling
- Reedmace
- Reefer
- Reel
- Referendum
- Reflation
- Reflection
- Reflex
- Reflex Camera
- Reflex Projection
- Reflexology
- Reform Acts
- Reform Judaism
- Reform Party
- Reformation
- Reformatorische Politieke Federatie (RPF)
- Reformed Church In America
- Reformed Churches
- Reformism
- Refraction
- Refractive Index
- Refractories
- Refranes ((Eng ‘refrain’))
- Refrigerator
- Refuse-derived Fuel (commercial)
- Refuse-derived Fuel (domestic)
- Reg(inald Cotterell) Butler Biography (1913–81)
- Reg(inald Hargreaves) Harris Biography (1920–92)
- Reg(inald Smith) Smythe Biography (1917–98)
- Regal
- Regency Style
- Regeneracionismo ((Eng ‘regenerationism’))
- Regensburg (Fr Ratisbonancient Castra Regina)
- Regent
- Regent
- Reggae
- Reggie Jackson Biography (1946– ) (popular name of Reginald Martinez Jacksonnickname Mr October)
- Reggio Di Calabria
- Reggio Nell'Emilia
- Regina
- Regina Resnik Biography (1922– )
- Reginald Aldworth Daly Biography (1871–1957)
- Reginald Aubrey Fessenden Biography (1866–1932)
- Reginald F Lewis Biography (1942–93)
- Reginald Harold Jones Biography (1917– )
- Reginald Heber Smith Biography (1889–1966)
- Reginald Howard Wilenski Biography (1887–1975)
- Reginald John Campbell Biography (1867–1956)
- Reginald Marsh Biography (1898–1954)
- Reginald Maudling Biography (1917–79)
- Reginald Pecock Biography (c.1395–c.1460)
- Reginald William Revans Biography (1907–2003)
- Regiomontanus Biography (1436–76) (Latin name of Johannes Müller)
- Regionalism (planning)
- Regionalism (politics)
- Regis Debray Biography (1941– )
- Register
- Regolith
- Regression
- Regulator
- Regulator Movements
- Rehabilitation
- Reich
- Reichian Therapy
- Reichsadler
- Reichsbank Or Deutsche Reichsbank
- Reichsbanner Schwarz-Rot-Gold
- Reichsdeputationshauptschluss
- Reichsfreiherr Von Gagern, Friedrich Ludwig Balduin Karl Moritz Biography (1794–1848)
- Reichsfreiherr Von Gagern, Heinrich Biography (1799–1880)
- Reichsgerichte
- Reichskammergericht
- Reichskanzlei
- Reichskanzler
- Reichskirche
- Reichskleinodien
- Reichskommissar
- Reichskonkordat
- Reichslandbund
- Reichsmark (RM)
- Reichsnährstand
- Reichspräsident
- Reichsreform
- Reichsregierung
- Reichsstädte
- Reichsstände
- Reichstag
- Reichstag Fire
- Reichsvikariat
- Reichswehr
- Reid A(llen) Bryson Biography (1920– )
- Reign Of Terror
- Reincarnation
- Reindeer
- Reiner Kunze Biography (1933– )
- Reinhard Baumgart Biography (1929– )
- Reinhard Bendix Biography (1916–91)
- Reinhard Gehlen Biography (1902–79)
- Reinhard Goering Biography (1887–1936)
- Reinhard Heydrich Biography (1904–42) (nickname the Hangman)
- Reinhard Johannes Sorge Biography (1892–1916)
- Reinhard Scheer Biography (1863–1928)
- Reinhard Selten Biography (1930– )
- Reinhold Niebuhr Biography (1892–1971)
- Reinhold Schneider Biography (1903–58)
- Reinier Cornelis Bakhuizen Van Den Brink Biography (1810–65)
- Reinier De Graaf Biography (1641–73)
- Reinmar Von Hagenau Biography (c.1160/70–c.1210) (Ger Reinmar der Alteknown as Reinmar the Elder)
- Relapsing Fever
- Relational Database
- Relative Atomic Mass
- Relative Density
- Relativism
- Relativistic Quantum Mechanics
- Relay
- Releasing Hormone
- Relics
- Relief Printing
- Relief Sculpture
- Religion
- Religion, Wars Of
- REM
- Rem
- Rembrandt (Harmenszoon Van Rijn) Biography (1606–69)
- Rembrandt Peale Biography (1778–1860)
- Remco Campert Biography (1928– )
- Remembrance Sunday
- Remonstrants
- Remora
- Remote Sensing
- Renaissance
- Renaissance Architecture
- Renaissance Art
- Renaissance, Humanismus, Reformation
- Renata Tebaldi Biography (1922–2004)
- Renate Dorrestein Biography (1954– )
- Renate Rasp Biography (1935– ) (originally Renate Rasp-Budzinski)
- Renate Rubinstein Biography (1929–90) (pseudonym Tamar)
- Renato Dulbecco Biography (1914– )
- Renato Fucini Biography (1843–1921)
- Renato Guttuso Biography (1912–87)
- Renato Serra Biography (1884–1915)
- Renaud Camus Biography (1946– )
- Rene Levesque Biography (1922–87)
- Rene Metgé Biography (1949– )
- Renewable Resources
- Renfrew
- Renin
- Rennes (Breton Roazonancient Condate)
- Rennet
- Reno
- Renormalization
- Rensis Likert Biography (1903–81)
- Rensselaer Wright Lee Biography (1898–1984)
- Rentenmark
- Renville Agreement
- René (François Ghislain) Magritte Biography (1898–1967)
- René (Théophile Hyacinthe) Laënnec Biography (1781–1826)
- René Antoine Ferchault De Réaumur Biography (1683–1757)
- René Auguste Chouteau Biography (1749–1829)
- René Barjavel Biography (1911–85)
- René Bazin Biography (1853–1932)
- René Benjamin Biography (1885–1948)
- René Blum Biography (1878–1942)
- René Boylesve Biography (1867–1926) (pseudonym of René-Marie-Auguste Tardiveu)
- René Cassin Biography (1887–1976)
- René Clair Biography (1898–1981) (pseudonym of René Chomette)
- René Clément Biography (1913–96)
- René Coty Biography (1882–1962)
- René Crevel Biography (1900–35)
- René D'Harnoncourt Biography (1901–68) (also known as Count D'Harnoncourt)
- René De Birague Biography (1506–83)
- René Descartes Biography (1596–1650) (Lat Renatius Cartesius)
- René Frédéric Thom Biography (1923–2002)
- René Ghil Biography (1862–1925)
- René Goscinny Biography (1926–77)
- René Huyghe Biography (1906–97)
- René J(ules) Dubos Biography (1901–82)
- René Joachim Henri Dutrochet Biography (1776–1847)
- René Kollo Biography (1937– )
- René Lacoste Biography (1904–96)
- René Lalique Biography (1860–1945)
- René Of Chalon Biography (1518–44)
- René Panhard Biography (1841–1908)
- René Schickele Biography (1883–1940) (pseudonym Sascha)
- René Viviani Biography (1862–1925)
- René Wellek Biography (1903–95)
- Renée (Kathleen) Zellweger Biography (1969– )
- Renée Vivien Biography (1877–1909) (pseudonym of Pauline Tarn)
- Reparations
- Repartition (Dutch repartitie)
- Repertory Grid
- Repetitive Strain Injury (RSI)
- Representative Action
- Repression
- Reproduction
- Reptile
- Repubblica Sociale Italiana (RSI) (Eng Italian Social Republic)
- Republic
- Republic Of The Seven United Netherlands (Dutch Republiek der Zeven Verenigde Nederlanden)
- Republican Party
- Republikschutzgesetz
- Requiem ((Lat ‘rest’))
- Requirements Engineering
- Resale Price Maintenance (RPM)
- Research And Development (R&D)
- Reserpine
- Reserve Currency
- Reserves
- Reservoir
- Resia Pass (Ital Passo di Resia)
- Residence Order
- Resin
- Resistance
- Resistance (Netherlands) (Dutch Ondergrondse or Illegalen)
- Resistencia
- Resistenza
- Resistivity
- Resistor
- Resonance
- Resonances
- Resonant Ionization Spectroscopy
- Respiration
- Respirator
- Restaurationsepoche
- Restitution
- Restitutionsedikt
- Restoration
- Restriction Fragment Length Polymorphism
- Restrictive Covenant
- Restrictive Practices
- Resurrection
- Retail Price Index (RPI)
- Reticulum ((Lat ‘net’))
- Retina
- Retinol
- Retriever
- Retrograde Motion
- Retrovirus
- Returned Services League
- Returns To Scale
- Reuben Nakian Biography (1897–1986)
- Reuben, Tribe Of
- Reubin (O'Donovan) Askew Biography (1928– )
- Reus
- Rev Ian (Richard Kyle) Paisley Biography (1926– )
- Revelation
- Revelation, Book Of (or the Apocalypse of St John)
- Reverberatory Furnace
- Reverdy Johnson Biography (1796–1876)
- Revere
- Reverend Ndabaningi Sithole Biography (1920–2000)
- Reversal Process
- Revisionism
- Revolt Of The Netherlands
- Revolution
- Revolution Of 1905
- Revolutions Of 1848
- Revolver
- Rewi Alley Biography (1897–1987)
- Rex
- Rex (Ernest) Warner Biography (1905–86)
- Rex (John) Whistler Biography (1905–44)
- Rex (Todhunter) Stout Biography (1886–1975)
- Rex E Lee Biography (1935– )
- Rexford (Guy) Tugwell Biography (1891–1979)
- Reye's Syndrome
- Reyes Católicos ((Eng ‘the Catholic Sovereigns’))
- Reykjavík
- Reynaldo Hahn Biography (1875–1947)
- Reynold (Henry) Hillenbrand Biography (1904–79)
- Reynolds' Number
- Reşiţa
- Rhadamanthus Or Rhadamanthys
- Rhapsody
- Rhazes Or Razi Biography (10th-c) (in full Abu Bakr Muhammad ibn Zakariya ar-Razi)
- Rhea (astronomy)
- Rhea (ornithology)
- Rhea Or Rheia (mythology)
- Rheims (Fr Reims [rĩs]ancient Durocortorumlater Remi)
- Rheinbund
- Rheinische Zeitung
- Rhenish Slate Mountains (Ger Rheinisches Schiefergebirge)
- Rheology
- Rhesus Factor
- Rhesus Monkey
- Rheticus Biography (1514–76) (originally Georg Joachim von Lauchen)
- Rhetoric
- Rheumatic Fever
- Rheumatism
- Rhijnvis Feith Biography (1753–1824)
- Rhine Canals
- Rhine, River (Ger RheinDutch RunFr Rhinancient Rhenus)
- Rhinitis
- Rhinoceros
- Rhizoid
- Rhizome
- Rhizopoda
- Rhode Island
- Rhodes (Gr RódhosItal Rodi)
- Rhodesian Ridgeback
- Rhododendron
- Rhodope Mountains (Bulgarian Rhodopi)
- Rhondda, Cynon, Taff
- Rhubarb
- Rhyl
- Rhyme
- Rhyming Slang
- Rhyolite
- Rhythm
- Rhythm And Blues
- Rhätikon
- Rhétoriqueurs
- Rhône, River
- Rialto Bridge
- Riario Caterina Sforza Biography (c.1463–1509)
- Rib
- Ribble, River
- Ribbon Worm
- Ribbonfish
- Ribe
- Riboflavin
- Ribose
- Ribosome
- Ricard Bofill Biography (1939– )
- Ricarda Huch Biography (1864–1947)
- Ricardo De La Vega Biography (1839–1910)
- Ricardo E Alegría Biography (1921– )
- Riccardo Bacchelli Biography (1891–1985)
- Riccardo Giacconi Biography (1931– )
- Riccardo Lombardi Biography (1901–84)
- Rice
- Rice Blast
- Richard (Adolf) Zsigmondy Biography (1865–1929)
- Richard (Alan) Meier Biography (1934– )
- Richard (Allen) Anthes Biography (1944– )
- Richard (Arthur Warren) Hughes Biography (1900–76)
- Richard (Carl) Jeffrey Biography (1926– )
- Richard (David) Briers Biography (1934– )
- Richard (David) Ellmann Biography (1918–87)
- Richard (Douglas James) Baker Biography (1925– )
- Richard (Erik) Oldenburg Biography (1933– )
- Richard (Erskine Frere) Leakey Biography (1944– )
- Richard (Evelyn) Byrd Biography (1888–1957)
- Richard (Felton) Outcault Biography (1863–1928)
- Richard (Frederick) Dimbleby Biography (1913–65)
- Richard (Gary) Brautigan Biography (1933–84)
- Richard (George) Adams Biography (1920– )
- Richard (Ghormley) Eberhart Biography (1904–2005)
- Richard (Gordon) Hatcher Biography (1933– )
- Richard (Harris) Barham Biography (1788–1845) (pseudonym Thomas Ingoldsby)
- Richard (Howard Stafford) Crossman Biography (1907–74)
- Richard (Howard) Hunt Biography (1935– )
- Richard (Ira) Bong Biography (1920–45)
- Richard (John Hannay) Meade Biography (1938– )
- Richard (Joseph) Daley Biography (1902–76)
- Richard (Joseph) Howard Biography (1929– )
- Richard (Joseph) Hughes Biography (1909–92)
- Richard (Leo) Simon Biography (1899–1960)
- Richard (Lewis) Thornburg Biography (1932– )
- Richard (Marvin) DeVos Biography (1926– )
- Richard (McClure) Scarry Biography (1919–94)
- Richard (McGarrah) Helms Biography (1913–2002)
- Richard (McKay) Rorty Biography (1931– )
- Richard (Milhous) Nixon Biography (1913–94)
- Richard (Nathaniel) Wright Biography (1908–60)
- Richard (Phillips) Feynman Biography (1918–88)
- Richard (Purdy) Wilbur Biography (1921– )
- Richard (Reid) Ingrams Biography (1937– )
- Richard (St John) Harris Biography (1930–2002)
- Richard (Thomas) Dunwoody Biography (1964– ) (nickname the Prince)
- Richard (Travis) Whitcomb Biography (1921– )
- Richard (Valentine) Morris Biography (1768–1815)
- Richard (Walker) Bolling Biography (1916– )
- Richard A(llen) Posner Biography (1939– )
- Richard Abegg Biography (1869–1910)
- Richard Abel Musgrave Biography (1910– )
- Richard Addinsell Biography (1904–77)
- Richard Adler Biography (1921– )
- Richard Aldington Biography (1892–1962) (originally Edward Godfree)
- Richard Allen Biography (1760–1831)