- REA 10 - Rocket Engine - USA - Hydrazine propellant
- REA 16 - Rocket Engine - USA - Hydrazine propellant
- REA 17 - Rocket Engine - USA - Hydrazine propellant
- REA 20 - Rocket Engine - USA - Hydrazine propellant
- REA 22 - Rocket Engine - USA - Hydrazine propellant
- REA 39 - Rocket Engine - USA - Hydrazine propellant
- Readdy - William Francis (Bill) Readdy - American Pilot Astronaut - NASA Group 12 - 1987
- Reagan - Ronald Reagan - American Manager -
- Rebrov - Mikhail Fedorovich Rebrov - Russian Journalist Cosmonaut - Journalist Group - 1965
- Rechitsa - IRBM Base in Belarus operated by Russia.
- Recknagel - Otto Recknagel - German Rocket engineer -
- Recoverable Booster Space System - Winged orbital launch vehicle - USA - See RBSS
- Recoverable Test Satellite - Spacecraft - Surveillance - Military - China - See FSW
- Red Lake - Suborbital Launch Site in Canada.
- Redstone - Short range ballistic missile - USA
- Reeder - J Reeder - American Pilot Test Pilot - Test Pilot (USAF)
- Reentry Module - Spacecraft - Manned - Spacecraft Module - - See Gemini RM
- Reentry Module - Spacecraft - Manned - Spacecraft Module - - See Gemini Lunar RM
- Reentry Module - Spacecraft - Manned - Spacecraft - USA - See Gemini B RM
- Reentry Module - Spacecraft - Manned - Spacecraft Module - - See Gemini LORV RM
- Reentry Module - Spacecraft - Manned - Spacecraft Module - - See Gemini Ferry RM
- Reentry Module - Spacecraft - Manned - Spacecraft Module - - See Gemini LSRS RM
- Reentry Vehicle - Spacecraft - Manned - Spacecraft Module - - See Big Gemini RV
- Rees - Eberhard Friedrich Michael Rees - German American Manager -
- Reflektor - Spacecraft - Technology - - Russia
- Regener - Erich Regener - German Professor -
- Reggane - Suborbital Launch Site in Algeria operated by France.
- Regulus 1 - Intermediate range cruise missile - USA
- Regulus 2 - Intermediate range cruise missile - USA
- Regulus I - Intermediate range cruise drone - - See Regulus 1
- Reid - Henry J E Reid - American Manager -
- Reiff - Rolf Reiff - German Rocket engineer -
- Reightler - Kenneth Stanley (Ken) Reightler Jr - American Pilot Astronaut - NASA Group 12 - 1987
- Reilly - Dr James Francis Reilly II - American Mission Specialist Astronaut - NASA Group 15 - 1995
- Reisig - Gerhard Herbert Richard Reisig - German Rocket engineer -
- Reisman - Garrett Erin Reisman - American Mission Specialist Astronaut - NASA Group 17 - 1998
- Reiter - Thomas Arthur Reiter - German Engineer Cosmonaut - ESA Group 1 - 1992, Commercial Group - 1993
- Reitsch - Hanna Reitsch - German Test pilot -
- Relay - Spacecraft - Technology - Communications - USA
- Relay Mirror Experiment - Spacecraft - Military - SDI - USA - See RME
- Remek - Vladimir Remek - Czech Pilot Cosmonaut - Intercosmos Group - 1976
- Remova - Spacecraft - Manned - Logistics - Russia
- Res - Eberhard Fritz Michael Res - German Rocket engineer -
- RESA-2 - Rocket Engine - USA - N2O4/MMH propellant
- RESA-5 - Rocket Engine - USA - N2O4/MMH propellant
- Reshetnev - Mikhail Fedorovich Reshetnev - Russian Engineer -
- Resnik - Dr Judith Arlene Resnik - American Mission Specialist Astronaut - NASA Group 8 - 1978
- Resupply Module - Spacecraft - Manned - Logistics - USA - See Apollo RM
- Resurs - Space Project - Surveillance - Military
- Resurs F1M - Spacecraft - Earth - Landsat - Russia
- Resurs F2 - Spacecraft - Earth - Landsat - Russia
- Resurs-O1 - Spacecraft - Earth - Landsat - Russia
- Resurs-O2 - Spacecraft - Earth - Landsat - Ukraine
- Resurs-OE - Spacecraft - Earth - Landsat - Russia
- Resurs-T - Spacecraft - Surveillance - Military - Russia - See Zenit-2M
- Resurs-T - Spacecraft - Surveillance - Military - Russia - See Zenit-8
- Reusable One stage Orbital Space Truck - - - See OOST
- Reusable Orbital Module-Booster & Utility Shuttle - SSTO orbital launch vehicle - USA - See Rombus
- Reusable Transport Spacecraft - Vertical Landing - Spacecraft - Manned - Spaceplane - Russia - See MTKVA
- Revin - Sergey Nikolayevich Revin - Russian Engineer Cosmonaut - Energia Engineer Group 13 - 1996
- REX - Spacecraft - Earth - Ionosphere - USA
- RGM-15 - Intermediate range cruise missile - USA (US Department of Defence Designation) - See Regulus 2
- RGM-165 - Short range ballistic missile - USA (US Department of Defence Designation) - See LASM
- RGM-59 - Tactical ballistic missile - USA (US Department of Defence Designation) - See Taurus RGM-59
- RGM-6 - Intermediate range cruise missile - USA (US Department of Defence Designation) - See Regulus 1
- RGM-6A - - (US Department of Defence Designation) - See Regulus 1
- RGM-6B - - (US Department of Defence Designation) - See Regulus 1
- RGM-8H - Tactical cruise missile - - See Talos
- RGM-8H - Tactical cruise missile - (US Department of Defence Designation) - See Talos
- RGM-8J - Tactical cruise missile - - See Talos
- RGM-8J - Tactical cruise missile - (US Department of Defence Designation) - See Talos
- RH - Sounding rocket - India
- RH-125 - Rocket Engine - India - Solid propellant
- RH-200 - Rocket Engine - India - Solid propellant
- RH-300 - Rocket Engine - India - Solid propellant
- RH-560 - Rocket Engine - India - Solid propellant
- RH-75 - Rocket Engine - India - Solid propellant
- Rheinbote - Surface-to-surface missile - Germany
- Rhode - Richard V Rhode - American Manager -
- Richards - Richard Noel (Dick) Richards - American Pilot Astronaut - NASA Group 9 - 1980
- Richards Paul - Paul Willam Richards - American Mission Specialist Astronaut - NASA Group 16 - 1996
- Rickhey - Georg Rickhey - German Manager -
- Ride - Dr Sally Kristen Ride - American Mission Specialist Astronaut - NASA Group 8 - 1978
- Ride Report - Spacecraft - Manned - Mars Expedition - USA
- Ridenour - Louis N Ridenour - American Manager -
- Ridley - Jack Ridley - American Pilot Test Pilot - Test Pilot (USAF)
- Riedel Klaus - Klaus Erhardt Riedel ("Riedel II") - German German Engineer -
- Riedel Walter - Walter J H "Papa" Riedel ("Riedel I") - German German Engineer -
- Riedel Walther - Walther Johannes Riedel ("Riedel III") - German Rocket engineer -
- Rif - Orbital launch vehicle - - See R-39
- Rif - - (Launch System Designation) - See S-300
- Rif-M - - (Launch System Designation) - See S-300
- Rif-MA - Orbital launch vehicle - - See R-39
- Rij - Jerry Jerome Rij - American Manned Spaceflight Engineer Astronaut - DoD Group 1 - 1979
- Riksha - Orbital launch vehicle - Russia
- RIM-156 - - (US Department of Defence Designation) - See Standard-ER
- RIM-161A - Anti-ballistic missile - (US Department of Defence Designation) - See Standard-ER
- RIM-2 - Surface-to-air missile - USA (US Department of Defence Designation) - See Terrier
- RIM-2A - - (US Department of Defence Designation) - See Terrier
- RIM-2B - - (US Department of Defence Designation) - See Terrier
- RIM-2C - - (US Department of Defence Designation) - See Terrier
- RIM-2D - - (US Department of Defence Designation) - See Terrier
- RIM-2F - - (US Department of Defence Designation) - See Terrier
- RIM-67 - Surface-to-air missile - USA (US Department of Defence Designation) - See Standard-ER
- RIM-67A - - (US Department of Defence Designation) - See Standard-ER
- RIM-67B - - (US Department of Defence Designation) - See Standard-ER
- RIM-67C - - (US Department of Defence Designation) - See Standard-ER
- RIM-67D - - (US Department of Defence Designation) - See Standard-ER
- RIM-8 - Surface-to-air missile - USA (US Department of Defence Designation) - See Talos
- RIM-8A - - (US Department of Defence Designation) - See Talos
- RIM-8A - rocket - See Talos
- RIM-8B - - (US Department of Defence Designation) - See Talos
- RIM-8B - rocket - See Talos
- RIM-8C - - (US Department of Defence Designation) - See Talos
- RIM-8C - rocket - See Talos
- RIM-8D - - (US Department of Defence Designation) - See Talos
- RIM-8D - rocket - See Talos
- RIM-8E - - (US Department of Defence Designation) - See Talos
- RIM-8E - rocket - See Talos
- RIM-8F - - (US Department of Defence Designation) - See Talos
- RIM-8F - rocket - See Talos
- RIM-8G - - (US Department of Defence Designation) - See Talos
- RIM-8G - rocket - See Talos
- RISP - Spacecraft - Planetary - Lunar Flyby - USA
- RITA C - Nuclear-powered orbital launch vehicle - USA
- Rita II - Rocket Engine - France - Solid propellant
- RJ47 - Rocket Engine - USA - Air/Kerosene propellant
- RKDS-100 - Rocket Engine - USSR - Lox/Kerosene propellant
- RKK Energia - Spacecraft - Manned - Mars Expedition - Russia - See Marpost
- RL-10 - Rocket Engine - USA - Lox/LH2 propellant
- RL-50 - Rocket Engine - USA - Lox/LH2 propellant
- RL-60 - Rocket Engine - USA - Lox/LH2 propellant
- RLA - Heavy-lift orbital launch vehicle - Russia
- RLA-1200 - Rocket Engine - USSR - Lox/Kerosene propellant
- RLA-300 - Rocket Engine - USSR - Lox/Kerosene propellant
- RLA-600 - Rocket Engine - USSR - Lox/Kerosene propellant
- RM - Spacecraft - Earth - Micrometeoroid - USA
- RM-01 - Rocket Engine - USA - Hydrazine propellant
- RM-05 - Rocket Engine - USA - N2O4/MMH propellant
- RM-1-1 - Rocket Engine - USA - N2O4/MMH propellant
- RM-1-2 - Rocket Engine - USA - N2O4/MMH propellant
- RM-10 - Test vehicle - USA
- RM-100 - Rocket Engine - USA - N2O4/Aerozine-50 propellant
- RM-100 - Rocket Engine - USA - N2O4/MMH propellant
- RM-100 - Rocket Engine - USA - Nitric acid/UDMH propellant
- RM-100A - Rocket Engine - USA - N2O4/MMH propellant - See RM-100
- RM-100B - Rocket Engine - USA - Nitric acid/UDMH propellant - See RM-100
- RM-100T - Rocket Engine - USA - N2O4/Aerozine-50 propellant - See RM-100
- RM-1100 - Rocket Engine - USA - Solid propellant
- RM-1400 - Rocket Engine - USA - Solid propellant
- RM-1500 - Rocket Engine - USA - Lox/LH2 propellant
- RM-1500H - Rocket Engine - USA - Lox/LH2 propellant - See RM-1500
- RM-1600 - Rocket Engine - USA - N2O4/MMH propellant - See RESA-5
- RM-205 - rocket - See S-25
- RM-207 - Target drone - - See S-25
- RM-217 - rocket - See S-25
- RM-217M - Target drone - - See S-25
- RM-25 - Rocket Engine - USA - N2O4/MMH propellant
- RM-25-1 - Rocket Engine - USA - N2O4/MMH propellant - See RM-25
- RM-3141 - Rocket Engine - USA - Solid propellant
- RM-50 - Rocket Engine - USA - N2O4/MMH propellant - See RESA-2
- RM-900 - Rocket Engine - USA - N2O4/MMH propellant
- RME - Spacecraft - Military - SDI - USA
- RN-6 - Rocket Engine - USA - Nuclear/LH2 propellant
- RO-1 - Rocket Engine - Russia - - See S2.1200
- RO-31 - Rocket Engine - Russia - Nuclear/LH2 propellant
- Roberts - Katherine Eileen Sparks Roberts - American Manned Spaceflight Engineer Astronaut - DoD Group 2 - 1982
- Robins AFB - Suborbital Launch Site in operated by .
- Robinson - Dr Stephen Kern Robinson - American Mission Specialist Astronaut - NASA Group 15 - 1995
- Robo - Spacecraft - Manned - Combat - USA
- Rocket Bomber - Spacecraft - Manned - Combat - USA - See Robo
- ROCSAT - Spacecraft - Earth - Seasat - Taiwan
- Rodimov - Petr Vadilyevich Rodimov - Russian Military Officer -
- ROentgen SATellite - Spacecraft - Astronomy - X-ray - Germany - See ROSAT
- Rogers - Russell Lee Rogers - American Pilot Astronaut - USAF Dynasoar Group - 1960
- Rohini - Spacecraft - Earth - Landsat - India
- Rohini 1A - Spacecraft - Technology - - India
- Rohini 2 - Spacecraft - Technology - - India
- Rokot - All-solid orbital launch vehicle - - See UR-100N
- Rokot - Intercontinental ballistic missile - Russia - See UR-100N
- Rokot K - All-solid orbital launch vehicle - - See UR-100N
- Romanenko - Yuri Viktorovich Romanenko - Russian Pilot Cosmonaut - Air Force Group 5 - 1970
- Romanenko Roman - Roman Yuriyevich Romanenko - Russian Pilot Cosmonaut - Air Force Group 12 - 1997
- Romanian space history - - See Romania
- Romanov - Valeri Aleksandrovich Romanov - Russian Engineer Cosmonaut - Almaz Engineer Group 3 - 1978
- Romashka - - (Launch System Designation) - See R-9
- Romashka - rocket - See R-9
- Romb - Spacecraft - Military - Target - Russia
- Romb - Spacecraft - Military - Target - Ukraine - See Taifun-2
- Rombus - SSTO orbital launch vehicle - USA
- Rominger - Kent Vernon Rominger - American Pilot Astronaut - NASA Group 14 - 1992
- Romny - IRBM Base in Ukraine operated by Russia.
- Ronney - Paul David Ronney - American Payload Specialist Astronaut -
- Rook - Rocket Engine - UK - Solid propellant
- Roosa - Stuart Allen (Stu) Roosa - American Pilot Astronaut - NASA Group 5 - 1966
- Rooster - Sounding rocket - USA - See Arcas
- RORSAT - Space Project - Surveillance - Naval Radarsat
- Rosamund - Suborbital Launch Site in operated by NASA/USAF.
- ROSAT - Spacecraft - Astronomy - X-ray - Germany
- Rosenbaum - Mortimer Rosenbaum - American Engineer -
- Rosetta - Spacecraft - Planetary - Comet - Europe
- Rosinski - Werner Kurt-Otto Rosinski - German Rocket engineer -
- Ross - Jerry Lynn Ross - American Mission Specialist Astronaut - NASA Group 9 - 1980
- Ross Chan - Chandler "Chan" Cole Ross - American Engineer -
- Ross H E - H E Ross - British Engineer -
- Rosselevich - Igor Aleksandrovich Rosselevich - Russian Engineer -
- Rossitto - Franco Rossitto - Italian Payload Specialist Astronaut -
- Rossmann - Theodor Rossmann - German Professor -
- Rostow - Walt W Rostow - American Manager -
- Roth - Ludwig Roth - German Engineer -
- Rothe - Heinrich Rothe - German Engineer -
- Rothera - Suborbital Launch Site in Antarctica operated by .
- Roton - Spacecraft - Manned - Spacecraft - USA
- Roton - SSTO orbital launch vehicle - USA
- Rotor - Spacecraft - Surveillance - Military - Russia - See Zenit-4M
- Rozhdestvensky - Valeri Illyich Rozhdestvensky - Russian Engineer Cosmonaut - Air Force Group 3 - 1965
- RP - Spacecraft - Military - ASAT - Russia
- RP-318 - Spacecraft - Manned - Rocketplane - Russia
- RPD-04 - Rocket Engine - Russia - Lox/Kerosene propellant
- RS - Intermediate range cruise missile - Russia
- RS-10 - Intercontinental ballistic missile - Russia - See UR-100
- RS-12 - Intercontinental ballistic missile - Russia - See RT-2
- RS-12M - Intercontinental ballistic missile - Russia - See Topol
- RS-12M1 / RS-12M2 - - - See Topol
- RS-12UTTKh - - - See RT-2
- RS-14 - Rocket Engine - USA - N2O4/MMH propellant
- RS-14 - Intercontinental ballistic missile - Russia - See Temp-2S
- RS-1402 - Rocket Engine - USA - N2O4/MMH propellant
- RS-1403 - Rocket Engine - USA - N2O4/MMH propellant
- RS-16 - Intercontinental ballistic missile - Ukraine - See MR-UR-100
- RS-17 - Rocket Engine - USA - Lox/LH2 propellant - See AMPS-1
- RS-18 - Rocket Engine - USA - N2O4/Aerozine-50 propellant
- RS-18 - All-solid orbital launch vehicle - - See UR-100N
- RS-18A - Intercontinental ballistic missile - Russia - See UR-100N
- RS-19 - Rocket Engine - USA - ClF3/Hydrazine propellant
- RS-20A - Intercontinental ballistic missile - Ukraine - See R-36M
- RS-21 - Rocket Engine - USA - N2O4/MMH propellant - See RS-2101
- RS-2100 - Rocket Engine - USA - Lox/LH2 propellant
- RS-2101 - Rocket Engine - USA - N2O4/MMH propellant
- RS-22 - Rocket Engine - USA - ClF3/Hydrazine propellant - See FLEXEM
- RS-2200 - Rocket Engine - USA - Lox/LH2 propellant
- RS-23 - Rocket Engine - USA - N2O4/MMH propellant
- RS-24 - Intercontinental ballistic missile - Russia
- RS-25 - Rocket Engine - USA - Lox/LH2 propellant - See SSME
- RS-27 - Rocket Engine - USA - Lox/Kerosene propellant
- RS-27A - Rocket Engine - USA - Lox/Kerosene propellant - See RS-27
- RS-28 - Rocket Engine - USA - N2O4/MMH propellant
- RS-30 - Rocket Engine - USA - Lox/LH2 propellant - See ASE
- RS-300 - Spacecraft - Technology - - USA
- RS-32 - Rocket Engine - USA - Lox/Kerosene propellant - See LR101
- RS-32 - Rocket Engine - USA - N2O4/MMH propellant - See LR101
- RS-32 - Rocket Engine - USA - N2O4/MMH propellant
- RS-34 - Rocket Engine - USA - N2O4/MMH propellant
- RS-36 - Rocket Engine - USA - N2O4/MMH propellant
- RS-36 - Rocket Engine - USA - Lox/Kerosene propellant - See RS-36 Sustainer
- RS-41 - Rocket Engine - USA - N2O4/MMH propellant
- RS-42 - Rocket Engine - USA - N2O4/MMH propellant
- RS-43 - Rocket Engine - USA - N2O4/MMH propellant
- RS-44 - Rocket Engine - USA - Lox/LH2 propellant - See AEC
- RS-45 - Rocket Engine - USA - N2O4/MMH propellant
- RS-47 - Rocket Engine - USA - N2O4/MMH propellant - See LR132
- RS-51 - Rocket Engine - USA - N2O4/MMH propellant
- RS-52 - Rocket Engine - USA - Lox/LH2 propellant
- RS-68 - Rocket Engine - USA - Lox/LH2 propellant
- RS-69 - Rocket Engine - USA - Lox/LH2 propellant - See RS-2200
- RS-71 - Rocket Engine - USA - Lox/LH2 propellant
- RS-72 - Rocket Engine - USA - N2O4/MMH propellant
- RS-73 - Rocket Engine - Japan - Lox/LH2 propellant - See MB-35
- RS-73 - Rocket Engine - Japan - Lox/LH2 propellant - See MB-45
- RS-73 - Rocket Engine - Japan - Lox/LH2 propellant - See MB-60
- RS-74 - Rocket Engine - USA - Lox/LH2 propellant
- RS-76 - Rocket Engine - USA - Lox/Kerosene propellant
- RS-77 - Rocket Engine - USA - Solar/LH2 propellant
- RS-800 - Rocket Engine - USA - Lox/LH2 propellant
- RS-82 - Rocket Engine - USA - H2O2/Kerosene propellant
- RS-84 - Rocket Engine - USA - Lox/Kerosene propellant
- RS-88 - Rocket Engine - USA -
- RS-X - Rocket Engine - USA - Lox/Kerosene propellant
- RS-XXX - Rocket Engine - USA - Lox/LH2 propellant
- RSA - Orbital launch vehicle - South Africa
- RSA-3-1 - Rocket Engine - South Africa - Solid propellant
- RSA-3-2 - Rocket Engine - South Africa - Solid propellant
- RSA-3-3 - Rocket Engine - South Africa - Solid propellant
- RSA-4-1 - Rocket Engine - South Africa - Solid propellant
- RSA-4-2 - Rocket Engine - South Africa - Solid propellant
- RSM-25 - Submarine-launched ballistic missile - Russia - See R-27
- RSM-40 - Intercontinental ballistic suborbital launch vehicle - - See R-29
- RSM-40 - Submarine-launched ballistic missile - Russia - See R-29
- RSM-45 - Submarine launched ballistic missile - Russia - See R-31
- RSM-50 - Intercontinental ballistic orbital launch vehicle - - See R-29
- RSM-52 - Orbital launch vehicle - - See R-39
- RSM-54 - Intercontinental ballistic orbital launch vehicle - - See R-29
- RSM-56 - Intercontinental ballistic missile - Russia - See Bulava
- RSS-40 - Intercontinental ballistic missile - Russia
- RSS-52 - Spacecraft - Manned - Rocketplane - Russia - See M-42
- RSS-52 - Spacecraft - Manned - Rocketplane - Russia - See M-44
- RSS-52 - Air-launched test vehicle - Russia
- RT-1 - Intermediate range ballistic missile - Russia
- RT-134 - Rocket Engine - Russia - Solid propellant
- RT-140 - Rocket Engine - Russia - Solid propellant
- RT-149 - Rocket Engine - Russia - Solid propellant
- RT-15 - Intermediate range ballistic missile - Russia
- RT-155 - Rocket Engine - Russia - Solid propellant
- RT-15M - Submarine-launched ballistic missile - - See RT-15
- RT-161 - Rocket Engine - Russia - Solid propellant
- RT-179 - Rocket Engine - Russia - Solid propellant
- RT-184 - Rocket Engine - Russia - Solid propellant
- RT-2 - Intercontinental ballistic missile - Russia
- RT-2-1 - Rocket Engine - Russia - Solid propellant
- RT-20 - Intermediate range ballistic missile - Russia
- RT-20P - Intermediate range ballistic missile - Russia - See RT-20
- RT-20P - Intercontinental ballistic missile - Ukraine
- RT-21 - Intercontinental ballistic missile - Russia
- RT-22 - Intercontinental ballistic missile - Russia
- RT-23 - Intercontinental ballistic missile - Ukraine
- RT-25 - Intermediate range ballistic missile - Russia
- RT-257 - Rocket Engine - Russia - Solid propellant
- RT-2PM - Intercontinental ballistic missile - Russia - See Topol
- RT-2PM - Orbital launch vehicle - - See Topol
- RT-2PM2 - Intercontinental ballistic missile - Ukraine - See Universal
- RTV - Rocket Engine - USA - Solid propellant
- RTV-A-2 - Test vehicle - USA (US Department of Defence Designation) - See Hiroc
- RTV-A-3 - Test vehicle - - See Navaho
- RTV-A-5 - Intermediate range cruise missile - - See Navaho
- RTV-G-1 - Sounding rocket - USA (US Department of Defence Designation) - See Wac
- RTV-G-4 - Short range ballistic test vehicle - (US Department of Defence Designation) - See V-2
- RTV-N-12 - Sounding rocket - USA (US Department of Defence Designation) - See Viking
- RTV-N-12a - - (US Department of Defence Designation) - See Viking
- RTV-N-6 - Tactical cruise missile - USA (US Department of Defence Designation) - See Bumblebee XPM
- RU-013 - Rocket Engine - Russia -
- Rubicon - Spacecraft - Manned - Spacecraft - USA
- Rude - Arthur Harry Rude - American Manager -
- Ruden - Paul Ruden - German Professor -
- Rudenko - Sergei Ignatyevich Rudenko - Russian Military Officer -
- Rudnev - Konstantin Nikolayevich Rudnev - Russian Government Official -
- Rudolph - Arthur Louis Hugo Rudolph - German Rocket engineer -
- Ruediger - Walter Ruediger - German Rocket technician -
- Ruehlemann - Erich Ruehlemann - German Rocket engineer -
- Rukavishnikov - Nikolai Nikolayevich Rukavishnikov - Russian Engineer Cosmonaut - Energia Engineer Group 1 Supplemental - 1967
- Runco - Mario Runco Jr - American Mission Specialist Astronaut - NASA Group 12 - 1987
- Runge - Ernst Runge - German Rocket technician -
- Ruppe - Kurt Oskar Harry Ruppe - German Professor -
- Rushworth - Robert Aitken Rushworth - American Pilot Test Pilot - Man-In-Space-Soonest - 1958, Test Pilot (USAF)
- Russia - Russian space history
- Russian space history - - See Russia
- Ruzhany - IRBM Base in Belarus operated by Russia.
- RV-A-8 - - (US Department of Defence Designation) - See Hermes
- RWDT HTHL - Winged orbital launch vehicle - Germany
- RX-250 - Sounding rocket - Indonesia
- RX-250-LPN - Rocket Engine - Indonesia - Solid propellant
- RX-Series - Spacecraft - Manned - Space Suits - USA
- Ryabikov - Vasili Mikhailovich Ryabikov - Russian Government Official -
- Ryazanskiy - Mikhail Sergeyevich Ryazanskiy - Russian Chief Designer -
- Ryazansky - Sergei Nikolayevich Ryazansky - Russian Physician Cosmonaut - IMBP Group 6 - 2003
- Ryker - Norman Ryker Jr - American -
- Ryori - Suborbital Launch Site in Japan.
- Ryumin - Valeri Viktorovich Ryumin - Russian Engineer Cosmonaut - Energia Engineer Group 4 - 1973
- Ryusei - Spacecraft - Technology - RV - Japan - See OREX
- Ryzhikov - Sergei Nikolaevich Ryzhikov - Pilot Cosmonaut - Air Force Group 14 - 2006
- RZ.2 - Rocket Engine - UK - Lox/Kerosene propellant
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© Mark Wade, 1997 - 2008 except where otherwise noted.
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