| Raavana 1 | April 17, 2019 | — | Antares |
| Radar Fence Transponder | December 10, 2006 | United States Naval Academy | Space Shuttle |
RADARSAT-1 | November 4, 1995 | Canadian Space Agency | Delta II |
| RADARSAT-2 | December 14, 2007 | MDA Space | Soyuz-FG |
| RADCAL | June 25, 1993 | — | Scout G-1 |
| RadCube | August 17, 2021 | — | Vega |
| Radio 3 | December 17, 1981 | — | Kosmos-3M |
| Radio 4 | December 17, 1981 | — | Kosmos-3M |
| Radio 5 | December 17, 1981 | — | Kosmos-3M |
| Radio 6 | December 17, 1981 | — | Kosmos-3M |
| Radio 7 | December 17, 1981 | — | Kosmos-3M |
| Radio 8 | December 17, 1981 | — | Kosmos-3M |
Radio Astronomy Explorer A | July 4, 1968 | — | Delta J |
| Radio Sputnik 1 | October 26, 1978 | — | Tsyklon-3 |
| Radio Sputnik 2 | October 26, 1978 | — | Tsyklon-3 |
| Radio-ROSTO | December 26, 1994 | — | Rokot |
| RADOSE | June 15, 1963 | — | Thor-Agena D |
Radsat | October 2, 1972 | — | Atlas E/F |
| Raduga 1 | February 28, 2009 | — | Proton-K |
| Raduga 1M-1 | December 9, 2007 | — | Proton-M |
| Raduga-1M | November 11, 2013 | — | Proton-M |
| Raijin-2 | May 24, 2014 | Tohoku University | H-IIA |
| Raiko | July 21, 2012 | Tohoku University | H-IIB |
RaInCube | May 21, 2018 | National Aeronautics and Space Administration | Antares |
| RAISE-2 | November 9, 2021 | Japan Aerospace Exploration Agency | Epsilon |
| RAISE-3 | October 12, 2022 | Japan Aerospace Exploration Agency | Epsilon |
| RAISE-4 | December 14, 2025 | Japan Aerospace Exploration Agency | Electron |
Ralphie | December 21, 2004 | — | Delta IV Heavy |
Ranger 1 | August 23, 1961 | Jet Propulsion Laboratory | Atlas-Agena B |
Ranger 2 | November 18, 1961 | Jet Propulsion Laboratory | Atlas-Agena B |
Ranger 3 | January 26, 1962 | Jet Propulsion Laboratory | Atlas-Agena B |
Ranger 4 | April 23, 1962 | — | Atlas-Agena B |
Ranger 5 | October 18, 1962 | — | Atlas-Agena B |
Ranger 6 | January 30, 1964 | — | Atlas-Agena B |
Ranger 7 | July 28, 1964 | — | Atlas-Agena B |
Ranger 8 | February 17, 1965 | — | Atlas-Agena B |
Ranger 9 | March 21, 1965 | — | Atlas-Agena B |
Rapid Pathfinder Prototype | February 6, 2011 | National Reconnaissance Office | Minotaur I |
| RapidEye 1 | August 29, 2008 | RapidEye AG, Planet Labs, BlackBridge | Dnepr |
| RapidEye 2 | August 29, 2008 | BlackBridge, Planet Labs, RapidEye AG | Dnepr |
| RapidEye 3 | August 29, 2008 | Planet Labs, BlackBridge, RapidEye AG | Dnepr |
| RapidEye 4 | August 29, 2008 | RapidEye AG, Planet Labs, BlackBridge | Dnepr |
| RapidEye 5 | August 29, 2008 | RapidEye AG, Planet Labs, BlackBridge | Dnepr |
| RAPIS-1 | January 18, 2019 | Japan Aerospace Exploration Agency | Epsilon |
| Rasad 1 | June 15, 2011 | Iranian Space Agency | Safir |
| RASAT | August 17, 2011 | State Planning Organization | Dnepr |
| RASCOM-QAF 1 | December 21, 2007 | RascomStar | Ariane 5GS |
| RASCOM-QAF 1R | August 4, 2010 | RascomStar | Ariane 5 ECA |
| Rashid | December 11, 2022 | — | Falcon 9 Block 5 |
Ratsat | September 28, 2008 | — | Falcon 1 |
RAX | November 20, 2010 | National Aeronautics and Space Administration | Minotaur IV |
RAX-2 | October 28, 2011 | SRI International | Delta II |
| Ray 1.0 | January 14, 2025 | Inversion Space | Falcon 9 Block 5 |
RazakSAT | July 14, 2009 | Astronautic Technology Sdn Bhd | Falcon 1 |
| RBLE | August 14, 2017 | National Aeronautics and Space Administration | Falcon 9 Full Thrust |
| RCA-SATCOM 1 | December 13, 1975 | — | Delta 3000 |
| RCA-SATCOM 2 | March 26, 1976 | — | Delta 3000 |
| RCA-SATCOM 3 | December 7, 1979 | — | Delta 3000 |
| RCA-SATCOM 3R | November 20, 1981 | — | Delta 3000 |
| RCA-SATCOM 4 | January 16, 1982 | — | Delta 3000 |
| RCA-SATCOM 5 | October 28, 1982 | — | Delta 3000 |
| RCA-SATCOM 6 | April 11, 1983 | — | Delta 3000 |
| RCA-SATCOM 7 | September 8, 1983 | — | Delta 3000 |
| RCM 1 | June 12, 2019 | Canadian Space Agency | Falcon 9 |
| RCM 2 | June 12, 2019 | Canadian Space Agency | Falcon 9 |
| RCM 3 | June 12, 2019 | Canadian Space Agency | Falcon 9 |
| Reflector | December 10, 2001 | Air Force Research Laboratory | Zenit-2 |
| Regatta-A | January 1, 1993 | — | — |
| Reimei | August 23, 2005 | — | Dnepr |
Relay 1 | December 13, 1962 | — | Delta B |
Relay 2 | January 21, 1964 | — | Delta B |
| Relay Mirror Experiment | February 14, 1990 | — | Delta II |
| Relict 2 | January 1, 1994 | — | — |
| RELIKT-1 | July 1, 1983 | Academy of Sciences of the USSR | — |
RemoveDEBRIS | April 2, 2018 | Surrey Satellite Technology, Surrey Space Centre, University of Surrey | Falcon 9 Full Thrust |
| RESOURCESAT-1 | October 17, 2003 | Indian Space Research Organisation | Polar Satellite Launch Vehicle-G |
| RESOURCESAT-2 | April 20, 2011 | Indian Space Research Organisation | Polar Satellite Launch Vehicle-G |
| RESOURCESAT-2A | December 7, 2016 | Indian Space Research Organisation | Polar Satellite Launch Vehicle-XL |
Resurs-DK | June 15, 2006 | Roscosmos State Corporation | Soyuz-U |
| Resurs-O 1 N4 | July 10, 1998 | — | Zenit-2 |
| Resurs-P No.1 | June 25, 2013 | Roscosmos State Corporation | Soyuz-2.1b |
Resurs-P No.2 | December 26, 2014 | Roscosmos State Corporation | Soyuz-2.1b |
Resurs-P No.3 | March 13, 2016 | Roscosmos State Corporation | Soyuz-2.1b |
| Resurs-P No.4 | March 31, 2024 | Roscosmos State Corporation | Soyuz-2.1b |
Reuven Ramaty High Energy Solar Spectroscopic Imager | February 5, 2002 | National Aeronautics and Space Administration | Pegasus-XL |
| REX | June 29, 1991 | Space Test Program | Scout G-1 |
| REX 2 | March 9, 1996 | Space Test Program | Pegasus-XL |
Rincon 1 | July 26, 2006 | — | Dnepr |
RISAT-1 | April 26, 2012 | Indian Space Research Organisation | Polar Satellite Launch Vehicle-XL |
RISAT-2 | April 20, 2009 | Indian Space Research Organisation, Indian Air Force | Polar Satellite Launch Vehicle-CA |
| RISAT-2B | May 22, 2019 | Indian Space Research Organisation | Polar Satellite Launch Vehicle-CA |
RISAT-2BR1 | December 11, 2019 | — | Polar Satellite Launch Vehicle-QL |
| RM 1 | November 9, 1970 | — | Scout B |
| RM 18 | August 16, 1968 | — | Atlas E/F |
ROBUSTA | February 13, 2012 | — | Vega |
ROBUSTA-1B | June 23, 2017 | — | Polar Satellite Launch Vehicle-XL |
ROBUSTA-3A | July 9, 2024 | Météo-France, Space Center of the University of Montpellier | Ariane 62 |
| Rohini Satellite RS-1 | July 18, 1980 | Indian Space Research Organisation | Satellite Launch Vehicle-3 |
Rohini Satellite RS-D1 | May 31, 1981 | Indian Space Research Organisation | Satellite Launch Vehicle-3 |
| Rohini Satellite RS-D2 | April 17, 1983 | Indian Space Research Organisation | Satellite Launch Vehicle-3 |
| Rohini Technology Payload | August 10, 1979 | Indian Space Research Organisation | Satellite Launch Vehicle-3 |
Rosalind Franklin | 2028 | — | Falcon Heavy |
ROSAT | June 1, 1990 | German Space Operations Center | Delta II |
Rosetta | March 2, 2004 | European Space Agency | Ariane 5G+ |
Rossi X-ray Timing Explorer | December 30, 1995 | — | Delta II |
| RS-10/11 | June 23, 1987 | — | Kosmos-3M |
RSat-P | December 16, 2018 | — | Electron |
| RSP-01 | February 20, 2021 | — | Antares |
| Rubin 2 | December 20, 2002 | — | Dnepr |
| Rubin 9.2 | September 23, 2009 | — | Polar Satellite Launch Vehicle |
| Rubin-8 | April 28, 2008 | — | Polar Satellite Launch Vehicle |