| # |
Name |
Photo |
Mission(s) (dates) |
Launch times |
Total duration |
Spacewalk times |
Spacewalk duration |
Notes |
| 1 |
Toyohiro Akiyama
(Japanese: 秋山 豊寛)
born 22 July 1942 |
 |
Soyuz TM-11, 1990-12-02 - 1990-12-10 |
1 |
7 days 21 hours 54 minutes |
0 |
0 |
The first journalist in space,
first Japanese in space,
first civilian on a commercial space flight,
cosmonaut researcher,
professor at Kyoto University of Art and Design |
| 2 |
Mamoru Mohri
(Japanese: 毛利 衛)
born 29 January 1948 |
 |
Endeavour STS-47, 1992-09-12 - 1992-09-20
Endeavour STS-99, 2000-02-11 - 2000-02-22 |
2 |
19 days 04 hours 08 minutes |
0 |
0 |
The first Japanese astronaut of an official Japanese space program,
Doctor of Science in Chemistry,
Payload specialist,
specialist in flying. |
| 3 |
Chiaki Mukai
(Japanese: 向井 千秋)
born 6 May 1952 |
 |
Columbia STS-65, 1994-07-08 - 1994-07-23
Discovery STS-95, 1998-10-29 - 1998-11-07 |
2 |
23 days 15 hours 39 minutes |
0 |
0 |
The first female astronaut of Japan,
cardiosurgeon,
specialist in payload. |
| 4 |
Koichi Wakata
(Japanese: 若田 光一)
born 1 August 1963 |
 |
Endeavour STS-72, 1996-01-11 - 1996-01-20
Discovery STS-92, 2000-10-11 - 2000-10-24
Discovery STS-119, ISS-18, 19, 20, Endeavour STS-127, 2009-03-15 - 2009-07-31
Soyuz TMA-11M, ISS-38, 39, 2013-11-07 - 2014-05-14
SpaceX Crew-5, ISS-68, 69, 2022-10-05 - 2023-03-12 |
5 |
504 days 18 hours 33 minutes |
2 |
14 hours 02 minutes |
Flight specialist,
flight engineer,
commander of ISS-39. |
| 5 |
Takao Doi
(Japanese: 土井 隆雄)
born 18 September 1954 |
 |
Columbia STS-87, 1997-11-19 - 1997-12-05
Endeavour STS-123, 2008-03-11 - 2008-03-25 |
2 |
31 days 10 hours 45 minutes |
2 |
12 hours 42 minutes |
Doctor of Science in
aerospace engineering
Doctor of Astronomy;
specialist in flying. |
| 6 |
Soichi Noguchi
(Japanese: 野口 聡一)
born 15 April 1965 |
 |
Discovery STS-114, 2005-07-26 - 2005-08-09
Soyuz TMA-17, ISS-22, 23, 2009-12-20 - 2010-06-02
SpaceX Crew-1, ISS-64, ISS-65 |
3 |
344 days 9 hours 33 minutes |
3 |
20 hours 05 minutes |
Aeronautical engineer,
flight specialist,
flight engineer. |
| 7 |
Akihiko Hoshide
(Japanese: 星出 彰彦)
born 28 December 1968 |
 |
Discovery STS-124, 2008-05-31 - 2008-06-14
Soyuz TMA-05M, ISS-32, 33, 2012-07-15 - 2012-11-19,
SpaceX Crew-2, ISS-65, 2021-04-23 - 2021-11-09 |
3 |
340 days 11 hours 41 minutes |
3 |
21 hours 03 minutes[1] |
Flight specialist,
flight engineer. |
| 8 |
Naoko Yamazaki
(Japanese: 山崎 直子)
born 27 December 1970 |
 |
Discovery STS-131, 2010-04-05 - 2010-04-20 |
1 |
15 days 02 hours 47 minutes |
0 |
0 |
Aeronautical engineer,
specialist in flying. |
| 9 |
Satoshi Furukawa
(Japanese: 古川 聡)
born 4 April 1964 |
 |
Soyuz TMA-02M, ISS-28, 29, 2011-07-07 - 2011-11-22
SpaceX Crew-7, ISS-69 / 70, 2023-08-26 - 2024-03-12 |
2 |
|
0 |
0 |
Surgeon,
flight engineer. |
| 10 |
Kimiya Yui
(Japanese: 油井 亀美也)
born 30 January 1970 |
 |
Soyuz TMA-17M, ISS-44, 45, 2015-07-22 - 2015-12-11
SpaceX Crew-11, ISS-73 / 74, 2025-07-31 - Present |
2 |
275 days, 4 hours, 11 minutes
(currently in space)
|
0 |
0 |
Colonel of the Air Force of Japan,
flight engineer. |
| 11 |
Takuya Onishi
(Japanese: 大西 卓哉)
born 22 December 1975 |
 |
Soyuz MS-01, ISS-48, ISS49, 2016-07-07 - 2016-10-30
SpaceX Crew-10, ISS-72, ISS-73, 2025-03-14 - present |
2 |
265 days, 8 hours, 9 minutes
(currently in space)
|
0 |
0 |
Flight engineer. |
| 12 |
Norishige Kanai[2]
(Japanese: 金井 宣茂)
born 5 December 1976 |
 |
Soyuz MS-07, ISS-54, 55, 2017-12-17 - 2018-06-03 |
1 |
168 days 05 hours 18 minutes |
1 |
5 hours 57 minutes |
Doctor,
flight engineer. |
| 13 |
Yusaku Maezawa
(Japanese: 前澤 友作)
born 22 November 1975 |
 |
Soyuz MS-20, 2021-12-08 - 2021-12-20 |
1 |
11 days 10 hours 9 minutes |
0 |
0 |
Space tourist |
| 14 |
Yozo Hirano
(Japanese: 平野 陽三)
born 1985 |
 |
Soyuz MS-20, 2021-12-08 - 2021-12-20 |
1 |
11 days 10 hours 9 minutes |
0 |
0 |
Space tourist |
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