Space Traveller Log, Part 1 (A-G)
All astronauts, cosmonauts and taikonauts in space
Last update: 03 March 2023
| Abbreviations | ASTP = Apollo-Soyuz Test Program | STS = Shuttle Transporter System | ISS = International Space Station | Pi = Pilot | MiSp = Mission Specialist (e.g. engineer, physician) |
| Note |
Suborbital spacecraft flights (MR-3 and MR-4, kicking off the orbital Mercury programme) and inflight aborts (Soyuz 18A, Soyuz-T 10) of missions are counted. First time crew members in the Challenger catastrophe (C. McAuliffe, M. Smith) are listed as well, while Apollo 1 victim R. Chaffee is included for completeness, though not counted. Also not counted as space flights are purely suborbital tourist flights. All X-15 and SpaceShipOne test flights are recorded as suborbital astronaut wings flights, though. |
To select by family name, click a letter: A B C D E F G | H I J K L M N O | P Q R S T U V W X Y Z
| No. | Name | Year | Country | Total | Active service | Programme / | Space station(s) | Assignment / profession; |
|---|---|---|---|---|---|---|---|---|
| [first name (nickname) surname] | of birth | (nation) | flights | (from - to) | Spacecraft | visited | Remarks / mission events | |
| A | ||||||||
| Joseph Acaba | 1967 | USA | 3 | 2009 - | STS; Soyuz-TMA/-MS | ISS | MiSp | |
| Loren Acton | 1936 | USA | 1 | 1985 | STS | – | MiSp | |
| James Adamson | 1946 | USA | 2 | 1989 - 1991 | STS | – | MiSp | |
| Viktor Afanasyev | 1948 | Russia | 4 | 1990 - 2001 | Soyuz-TM | Mir; ISS | Pi | |
| Aidyn Aimbetov | 1972 | KAZ | 1 | 2016 - | Soyuz-TMA | ISS | MiSp | |
| Hazza Al Mansouri | 1983 | UAE | 1 | 2019 | Soyuz-MS | ISS | visiting astronaut | |
| Thomas Akers | 1951 | USA | 4 | 1990 - 1996 | STS | Mir | MiSp | |
| Tohiro Akiyama | 1942 | Japan | 1 | 1990 | Soyuz-TM | Mir | MiSp; first Japanese cosmonaut in space | |
| Valdimir Aksyonov | 1935 | Russia | 2 | 1976 - 1980 | Soyuz; Soyuz-T | Salyut 6 | MiSp | |
| Edwin Buzz Aldrin | 1930 | USA | 2 | 1966 - 1969 | Gemini; Apollo | – | Pi; second man to put his foot on the moon | |
| Aleksandr Pan. Aleksandrov | 1951 | Bulgaria | 1 | 1988 | Soyuz-TM | Mir | MiSp; first Bulgarian cosmonaut in space | |
| Aleksandr Pav. Aleksandrov | 1943 | Russia | 2 | 1983 - 1987 | Soyuz-T/-TM | Salyut 7; Mir | MiSp | |
| Andrew Allen | 1955 | USA | 3 | 1992 - 1996 | STS | – | Pi | |
| Joseph Allen | 1937 | USA | 2 | 1982 - 1984 | STS | – | MiSp | |
| Sultan Al-Neyadi | 1981 | UAE | 1 | 2023 | Dragon | ISS | MiSp | |
| Sultan Abdel-aziz Al-Saud | 1956 | Saudi Arabia | 1 | 1985 | STS | – | MiSp | |
| Scott Altman | 1959 | USA | 4 | 1998 - 2009 | STS | ISS | Pi | |
| William Anders | 1933 | USA | 1 | 1968 | Apollo | – | Pi | |
| Clayton Anderson | 1959 | USA | 2 | 2007 - | STS | ISS | MiSp | |
| Michael Anderson † | 1959 | USA | 2 | 1998 - 2003 | STS | Mir | MiSp; died in shuttle Columbia re-entry accident (STS-107) | |
| Anousheh Ansari | 1966 | USA | 1 | 2006 | STS | ISS | MiSp; first female paying space tourist | |
| Dominic (Tony) Antonelli | 1967 | USA | 2 | 2009 - | STS | ISS | Pi | |
| Jerome Apt | 1949 | USA | 4 | 1991 - 1996 | STS | Mir | MiSp | |
| Hayley Arceneaux | 1991 | USA | 1 | 2021 | Dragon | – | MiSp | |
| Lee Archambault | 1960 | USA | 2 | 2007 - | STS | ISS | Pi | |
| Neil Armstrong † | 1930 | USA | 2 | 1966 - 1969 | Gemini; Apollo | – | Pi; Apollo 11 commander and first man on the moon! | |
| Richard (Ricky) Arnold | 1963 | USA | 2 | 2009 - | STS; Soyuz-MS | ISS | MiSp | |
| Oleg Artemyev | 1970 | Russia | 3 | 2014 - | Soyuz-TMA/-MS | ISS | Pi/MiSp | |
| Anatoli Artsebarsky | 1956 | Russia | 1 | 1990 - 1991 | Soyuz-TM | Mir | Pi | |
| Yuri Artyukhin † | 1930 | Russia | 1 | 1974 | Soyuz | Salyut 3 | MiSp | |
| Jeffrey Ashby | 1954 | USA | 2 | 1999 - 2002 | STS | ISS | Pi | |
| Oleg Atkov | 1949 | Russia | 1 | 1984 | Soyuz-T | Salyut 7 | MiSp | |
| Toktar Aubakirov | 1946 | Kazakhstan | 1 | 1991 | Soyuz-TM | Mir | Pi | |
| Serena Auńón-Chancellor | 1976 | USA | 1 | 2018 - | Soyuz-MS | ISS | MiSp | |
| Sergei Avdeyev | 1956 | Russia | 3 | 1992 - 1999 | Soyuz-TM | Mir | MiSp; has spent more time in space than anyone else (more than 747 days) | |
| B | ↑ | |||||||
| James Bagian | 1952 | USA | 2 | 1989 - 1991 | STS | – | MiSp | |
| Ellen Baker | 1953 | USA | 3 | 1989 - 1995 | STS | Mir | MiSp | |
| Michael Baker | 1953 | USA | 4 | 1991 - 1997 | STS | Mir | Pi | |
| Aleksandr Balandin | 1953 | Russia | 1 | 1990 | Soyuz-TM | Mir | MiSp | |
| Michael Barratt | 1959 | USA | 2 | 2009 - | Soyuz-TMA; STS | ISS | MiSp | |
| Kayla Barron | 1987 | USA | 1 | 2021 - | Dragon | ISS | MiSp | |
| Daniel Barry | 1953 | USA | 3 | 1996 - 2001 | STS | ISS | MiSp | |
| John Bartoe | 1944 | USA | 1 | 1985 | STS | – | MiSp | |
| Yuri Baturin | 1949 | Russia | 1 | 1998 - 2001 | Soyuz-TM | Mir; ISS | MiSp | |
| Patrick Baudry | 1946 | France | 1 | 1985 | STS | – | MiSp | |
| Alan Bean † | 1932 | USA | 2 | 1969 - 1973 | Apollo; Apollo/Skylab 3 | Skylab-1 | Pi | |
| Robert Behnken | 1970 | USA | 3 | 2008 - | STS; Dragon | ISS | MiSp | |
| Ivan Bella | 1964 | Slovakia | 1 | 1999 | Soyuz-TM | Mir | MiSp | |
| Pavel Belyayev † | 1925 | Russia | 1 | 1965 | Voskhod | – | Pi | |
| Georgi Beregovoi † | 1921 | Ukraine | 1 | 1968 | Soyuz | – | Pi | |
| Anatoli Berezovoi | 1942 | Russia | 1 | 1982 | Soyuz-T | Salyut 7 | Pi | |
| John Blaha | 1942 | USA | 5 | 1989 - 1996 | STS | Mir | Pi | |
| Michael Bloomfield | 1959 | USA | 3 | 1997 - 2002 | STS | Mir; ISS | Pi | |
| Guion (Guy) Bluford | 1942 | USA | 4 | 1983 - 1992 | STS | – | MiSp | |
| Karol (Bo) Bobko | 1937 | USA | 3 | 1983 - 1985 | STS | – | Pi | |
| Eric Boe | 1964 | USA | 2 | 2008 - | STS | ISS | Pi | |
| Charles Bolden | 1946 | USA | 4 | 1986 - 1994 | STS | – | Pi | |
| Roberta Bondar | 1945 | Canada | 1 | 1992 | STS | – | MiSp | |
| Andrei Borisenko | 1964 | Russia | 2 | 2011 - | Soyuz-TMA/-MS | ISS | MiSp | |
| Frank Bormann | 1928 | USA | 2 | 1965 - 1968 | Gemini | – | Pi | |
| Stephen Bowen | 1964 | USA | 4 | 2008 - | STS; Dragon | ISS | MiSp | |
| Kenneth Bowersox | 1956 | USA | 5 | 1992 - 2003 | STS; Soyuz-TMA | ISS | Pi/MiSp | |
| Charles Brady † | 1951 | USA | 1 | 1996 | STS | – | MiSp | |
| Roy Bridges | 1943 | USA | 1 | 1985 | STS | – | Pi | |
| Vance Brand | 1931 | USA | 4 | 1975 - 1990 | Apollo-ASTP; STS | – | Pi | |
| Daniel Brandenstein | 1943 | USA | 4 | 1983 - 1992 | STS | – | Pi | |
| Randolph (Randy) Bresnik | 1967 | USA | 2 | 2009 - | STS; Soyuz-MS | ISS | MiSp | |
| Curtis Brown | 1956 | USA | 6 | 1992 - 1999 | STS | – | Pi | |
| David Brown † | 1956 | USA | 1 | 2003 | STS | – | MiSp; died in shuttle Columbia re-entry accident (STS-107) | |
| Mark Brown | 1951 | USA | 2 | 1989 - 1991 | STS | – | MiSp | |
| James Buchli | 1945 | USA | 4 | 1985 - 1991 | STS | – | MiSp | |
| Jay Buckey | 1956 | USA | 1 | 1998 | STS | – | MiSp | |
| Nikolai Budarin | 1953 | Russia | 3 | 1995 - 2003 | STS; Soyuz-TM/-TMA | Mir; ISS | MiSp | |
| Daniel Burbank | 1961 | USA | 3 | 2000 - 2012 | STS; Soyuz-TMA | ISS | MiSp | |
| Daniel Bursch | 1957 | USA | 4 | 1993 - 2002 | STS | ISS | MiSp | |
| Valeri Bykovsky † | 1934 | Russia | 3 | 1963 - 1978 | Vostok; Soyuz | Salyut 6 | Pi | |
| C | ↑ | |||||||
| Robert Cabana | 1949 | USA | 4 | 1990 - 1998 | STS | ISS | Pi | |
| Cai Xuzhe | 1976 | China | 1 | 2022 - | Shenzou | TSS | Pi | |
| Tracy Caldwell-Dyson | 1969 | USA | 2 | 2007 - | STS | ISS | MiSp | |
| Charles Camarda | 1952 | USA | 1 | 2005 | STS | ISS | MiSp | |
| Kenneth Cameron | 1949 | USA | 3 | 1991 - 1995 | STS | Mir | Pi | |
| Duane Carey | 1957 | USA | 1 | 2002 | STS | – | MiSp | |
| Scott Carpenter † | 1925 | USA | 1 | 1962 | Mercury | – | Pi | |
| Gerald Carr | 1932 | USA | 1 | 1973 - 1974 | Apollo/Skylab 4 | Skylab-1 | Pi; final long endurance Skylab-1 visit | |
| Manley (Sonny) Carter † | 1947 | USA | 1 | 1989 | STS | – | MiSp | |
| John Casper | 1943 | USA | 4 | 1990 - 1996 | STS | – | Pi | |
| Josh Cassada | 1973 | USA | 1 | 2022 - | Dragon | ISS | Pi | |
| Christopher Cassidy | 1970 | USA | 3 | 2009 - | STS; Soyuz-TMA/-MS | ISS | MiSp | |
| Robert Cenker | 1948 | USA | 1 | 1986 | STS | – | MiSp | |
| Eugene Cernan † | 1934 | USA | 3 | 1966 - 1972 | Gemini; Apollo | – | Pi; last man on the moon, to date | |
| – | Roger Chaffee † | 1935 | USA | – | 1967 | (Apollo) | – | Pi; died in Apollo 1 (AS-204) flash fire on launch pad |
| Gregory Chamitoff | 1962 | USA | 2 | 2008 - | STS | ISS | MiSp | |
| Franklin Chang-Díaz | 1950 | USA | 7 | 1986 - 2002 | STS | Mir; ISS | MiSp | |
| Raja Chari | 1977 | USA | 1 | 2021 - | Dragon | ISS | Pi | |
| Kalpana Chawla † | 1961 | USA | 2 | 1997 - 2003 | STS | – | Indian born MiSp; died in shuttle Columbia re-entry accident (STS-107) | |
| Maurizio Cheli | 1959 | Italy | 1 | 1996 | STS | – | MiSp | |
| Chen Dong | 1978 | China | 2 | 2016 - | Shenzhou | Tiangong 2, TSS | MiSp | |
| Leroy Chiao | 1960 | USA | 4 | 1994 - 2005 | STS; Soyuz-TMA | ISS | MiSp | |
| Kevin Chilton | 1954 | USA | 3 | 1992 - 1996 | STS | Mir | Pi | |
| Jean-Loup Chrétien | 1938 | France | 3 | 1982 - 1997 | Soyuz-T/-TM; STS | Salyut 7; Mir | MiSp; first French cosmonaut in space | |
| Laurel Clark † | 1961 | USA | 1 | 2003 | STS | – | MiSp; died in shuttle Columbia re-entry accident (STS-107) | |
| Mary Cleave | 1947 | USA | 2 | 1985 - 1989 | STS | – | MiSp | |
| Jean-Francois Clervoy | 1958 | France | 3 | 1994 - 1999 | STS | Mir | MiSp | |
| Michael Clifford | 1952 | USA | 3 | 1992 - 1996 | STS | Mir | MiSp | |
| Michael Coats | 1946 | USA | 3 | 1984 - 1991 | STS | – | Pi | |
| Kenneth Cockrell | 1950 | USA | 5 | 1993 - 2002 | STS | ISS | Pi | |
| Catherine Coleman | 1960 | USA | 3 | 1995 - 2011 | STS; Soyuz-TMA | ISS | MiSp | |
| Eileen Collins | 1956 | USA | 4 | 1995 - 2005 | STS | ISS | Pi; first female Space Shuttle commander | |
| Michael Collins † | 1930 | USA | 2 | 1966 - 1969 | Gemini; Apollo | – | Pi | |
| Larry Connor | 1950 | USA | 1 | 2022 | Dragon | ISS | MiSp; tourist | |
| Charles (Pete) Conrad † | 1930 | USA | 2 | 1965 - 1973 | Gemini; Apollo/Skylab 2 | Skylab-1 | Pi | |
| Gordon Cooper † | 1927 | USA | 2 | 1963 - 1965 | Mercury; Gemini | – | Pi; first astronaut to fly twice | |
| Richard Covey | 1946 | USA | 4 | 1985 - 1993 | STS | – | Pi | |
| Timothy (TJ) Creamer | 1959 | USA | 1 | 2009 - | Soyuz-TMA | ISS | MiSp | |
| John Creighton | 1943 | USA | 3 | 1985 - 1991 | STS | – | Pi | |
| Robert Crippen | 1937 | USA | 4 | 1981 - 1984 | STS | – | Pi; pilot on maiden shuttle flight (Columbia) | |
| Samantha Cristoforetti | 1977 | Italy | 2 | 2014 - | Soyuz-TMA; Dragon | ISS | MiSp | |
| Roger Crouch | 1940 | USA | 2 | 1997 | STS | – | MiSp | |
| Frank Culbertson | 1949 | USA | 3 | 1990 - 2001 | STS | ISS | Pi | |
| Walter Cunningham | 1932 | USA | 1 | 1968 | Apollo | – | Pi; first US three men spacecraft flight | |
| Robert Curbeam | 1962 | USA | 2 | 1997 - 2006 | STS | ISS | MiSp | |
| Nancy Currie (Sherlock) | 1958 | USA | 4 | 1993 - 2002 | STS | ISS | MiSp | |
| D | ↑ | |||||||
| Nancy Davis | 1953 | USA | 3 | 1992 - 1997 | STS | – | MiSp | |
| Lawrence DeLucas | 1950 | USA | 1 | 1992 | STS | – | MiSp | |
| Lev Demin † | 1926 | Russia | 1 | 1974 | Soyuz | – | MiSp | |
| Deng Qingming | 1966 | China | 1 | 2022 - | Shenzhou | TSS | Pi | |
| Frank De Winne | 1961 | Belgium | 2 | 2002 - 2009 | Soyuz-TMA | ISS | MiSp | |
| Vladimir Dezhurov | 1962 | Russia | 2 | 1995 - 2001 | Soyuz-TM; STS | Mir; ISS | Pi/MiSp | |
| Georgi Dobrovolsky † | 1928 | Russia | 1 | 1971 | Soyuz | Salyut 1 | Pi; first ever flight to a space station; Soyuz 11 crew died at landing due to loss of cabin atmosphere | |
| Takao Doi | 1954 | Japan | 2 | 1997 - 2008 | STS | ISS | MiSp | |
| Benjamin (Alvin) Drew | 1962 | USA | 2 | 2007 - 2011 | STS | ISS | MiSp | |
| Brian Duffy | 1953 | USA | 4 | 1992 - 2000 | STS | ISS | Pi | |
| Charles Duke | 1935 | USA | 1 | 1972 | Apollo | – | Pi | |
| Bonnie Dunbar | 1949 | USA | 5 | 1985 - 1998 | STS | Mir | MiSp | |
| Pedro Duque | 1963 | Spain | 2 | 1998 - 2003 | STS | ISS | MiSp | |
| Samuel Durrance | 1943 | USA | 2 | 1990 - 1995 | STS | – | MiSp | |
| James Dutton | 1968 | USA | 1 | 2010 - | STS | ISS | Pi | |
| Vladimir Dzhanibekov | 1942 | Russia | 5 | 1978 - 1985 | Soyuz; Soyuz-T | Salyut 6 & 7 | Pi | |
| E | ↑ | |||||||
| Joe Edwards | 1958 | USA | 1 | 1998 | STS | Mir | Pi | |
| Donn Eisele † | 1930 | USA | 1 | 1968 | Apollo | – | Pi; first US three men spacecraft flight | |
| Anthony England | 1942 | USA | 1 | 1985 | STS | – | MiSp | |
| Joseph Engle | 1932 | USA | 2 | 1981 - 1985 | STS | – | Pi; performed test glide flights with shuttle Enterprise (OV-101) | |
| Ronald Evans † | 1933 | USA | 1 | 1972 | Apollo | – | Pi | |
| Reinhold Ewald | 1956 | Germany | 1 | 1997 | Soyuz-TM | Mir | MiSp | |
| Leopold Eyharts | 1957 | France | 2 | 1998 - 2008 | Soyuz-TM; STS | Mir; ISS | MiSp | |
| F | ↑ | |||||||
| John Fabian | 1939 | USA | 2 | 1983 - 1985 | STS | – | MiSp | |
| Mohammed Faris | 1951 | Syria | 1 | 1987 | Soyuz-TM | Mir | MiSp; first Syrian cosmonaut in space | |
| Bertalan Farkas | 1949 | Hungaria | 1 | 1980 | Soyuz | Salyut 6 | MiSp; fifth Interkosmos | |
| Jean-Jacques Favier | 1949 | France | 1 | 1996 | STS | – | MiSp | |
| Andrey Fedyaev | 1981 | Russia | 1 | 2023 - | Dragon | ISS | MiSp | |
| Fei Junlong | 1966 | China | 2 | 2005 - | Shenzhou | TSS | Pi | |
| Konstantin Feoktisov † | 1926 | Russia | 1 | 1964 | Voskhod | – | Pi; member of first Voskhod crew | |
| Christopher Ferguson | 1961 | USA | 3 | 2006 - | STS | ISS | Pi | |
| Martin Fettman | 1956 | USA | 1 | 1993 | STS | – | MiSp | |
| Andrew Feustel | 1965 | USA | 3 | 2009 - | STS; Soyuz-MS | ISS | MiSp | |
| Anatoli Filipchenko | 1928 | Russia | 2 | 1969 - 1974 | Soyuz | – | Pi | |
| Michael (Mike) Fincke | 1967 | USA | 3 | 2004 - | Soyuz-TMA; STS | ISS | MiSp | |
| Anna Fisher | 1949 | USA | 1 | 1984 | STS | – | MiSp | |
| Jack Fisher | 1974 | USA | 1 | 2017 - | Soyuz-MS | ISS | MiSp | |
| William Fisher | 1946 | USA | 1 | 1985 | STS | – | MiSp | |
| Klaus-Dietrich Flade | 1952 | Germany | 1 | 1992 | Soyuz-TM | Mir | MiSp | |
| Michael Foale | 1957 | USA | 6 | 1992 - 2004 | STS | Mir; ISS | MiSp | |
| Kevin Ford | 1960 | USA | 2 | 2009 - 2013 | STS; Soyuz-TMA | ISS | Pi & MiSp | |
| Michael Foreman | 1957 | USA | 2 | 2008 - 2009 | STS | ISS | MiSp | |
| Patrick Forrester | 1957 | USA | 3 | 2001 - 2009 | STS | ISS | MiSp | |
| Michael Fossum | 1957 | USA | 3 | 2006 - 2011 | STS; Soyuz-TMA | ISS | MiSp | |
| Stephen Frick | 1964 | USA | 2 | 2002 - 2008 | STS | ISS | Pi | |
| Dirk Frimout | 1941 | Belgium | 1 | 1992 | STS | – | MiSp | |
| Christer Fuglesang | 1957 | Sweden | 2 | 2006 - 2009 | STS | ISS | MiSp | |
| Gordon Fullerton | 1936 | USA | 2 | 1982 - 1985 | STS | – | Pi | |
| Reinhard Furrer † | 1940 | Germany | 1 | 1985 | STS | – | MiSp | |
| Satoshi Furukawa | 1964 | Japan | 1 | 2011 - | Soyuz-TMA | ISS | MiSp | |
| G | ↑ | |||||||
| Francis (Drew) Gaffney | 1946 | USA | 1 | 1991 | STS | – | MiSp | |
| Yuri Gagarin † | 1934 | Russia | 1 | 1961 | Vostok | – | Pi; first man in space on 12-Apr-1961 | |
| Ronald Garan | 1961 | USA | 2 | 2008 - 2011 | STS; Soyuz-TMA | ISS | MiSp | |
| Dale Gardner | 1948 | USA | 2 | 1983 - 1984 | STS | – | MiSp | |
| Guy Gardner | 1948 | USA | 2 | 1988 - 1990 | STS | – | Pi | |
| Edwin (Jake) Garn | 1932 | USA | 1 | 1985 | STS | – | MiSp; then US Senator | |
| Joseph Garneau | 1949 | Canada | 3 | 1984 - 2000 | STS | ISS | MiSp | |
| Owen Garriott | 1930 | USA | 2 | 1973 - 1983 | Apollo/Skylab 3; STS | Skylab-1 | Pi | |
| Richard Garriott | 1961 | UK / USA | 1 | 2008 | Soyuz-TMA | ISS | Space tourist | |
| Charles Gemar | 1955 | USA | 3 | 1990 - 1994 | STS | – | MiSp | |
| Michael Gernhardt | 1956 | USA | 4 | 1995 - 2001 | STS | ISS | MiSp | |
| Alexander Gerst | 1976 | Germany | 2 | 2014 - | Soyuz-TMA/MS | ISS | MiSp | |
| Edward Gibson | 1936 | USA | 1 | 1973 - 1974 | Apollo/Skylab 4 | Skylab-1 | Pi; final long endurance Skylab-1 visit | |
| Robert (Hoot) Gibson | 1946 | USA | 5 | 1984 - 1995 | STS | Mir | Pi | |
| Yuri Gidzenko | 1962 | Russia | 3 | 1995 - 2002 | Soyuz-TM | Mir; ISS | Pi; first ISS Expedition Crew | |
| Yuri Glazkov † | 1939 | Russia | 1 | 1977 | Soyuz | Salyut 5 | MiSp | |
| John Glenn † | 1921 | USA | 2 | 1962 / 1998 | Mercury; STS | – | Pi; first American in Earth orbit; oldest astronaut to date | |
| Victor Glover | 1976 | USA | 1 | 2020 - | Dragon | ISS | Pi | |
| Linda Godwin | 1952 | USA | 4 | 1991 - 2001 | STS | Mir; ISS | MiSp | |
| Michael Good | 1962 | USA | 2 | 2009 - 2010 | STS | ISS | MiSp | |
| Viktor Gorbatko | 1934 | Russia | 3 | 1969 - 1980 | Soyuz | Salyut 5 & 6 | Pi | |
| Richard Gordon | 1929 | USA | 2 | 1966 - 1969 | Gemini; Apollo | – | Pi | |
| Dominic Gorie | 1957 | USA | 4 | 1998 - 2008 | STS | Mir; ISS | Pi; member of final Shuttle/Mir mission | |
| Ronald Grabe | 1945 | USA | 4 | 1985 - 1993 | STS | – | Pi | |
| Georgi Grechko | 1931 | Russia | 3 | 1975 - 1985 | Soyuz; Soyuz-T | Salyut 4, 6 & 7 | MiSp | |
| Frederick Gregory | 1941 | USA | 3 | 1985 - 1991 | STS | – | Pi | |
| William Gregory | 1957 | USA | 1 | 1995 | STS | – | Pi | |
| Stanley Griggs † | 1939 | USA | 1 | 1985 | STS | – | Pi | |
| Virgil (Gus) Grissom † | 1926 | USA | 2 | 1961 - 1967 | Mercury; Gemini; (Apollo) | – | Pi; died in Apollo 1 (AS-204) flash fire on launch pad | |
| John Grunsfeld | 1958 | USA | 5 | 1995 - 2009 | STS | Mir; ISS | MiSp | |
| Aleksey Gubarev | 1931 | Russia | 2 | 1975 - 1978 | Soyuz | Salyut 4 & 6 | Pi | |
| Umberto Guidoni | 1954 | Italy | 2 | 1996 - 2001 | STS | ISS | MiSp | |
| Jügderdemidiin Gürragchaa | 1947 | Mongolia | 1 | 1981 | Soyuz | Salyut 6 | MiSp; eighth Interkosmos mission | |
| Sidney McNeil Gutierrez | 1951 | USA | 2 | 1991 - 1994 | STS | – | Pi | |