Canada
Dafydd Williams
(Dafydd Rhys "Dave" Williams)
(May 16, 1954)
Astronaut 375
Astronaut Canada 7
EVA astronaut 168
EVA astronaut Canada 3
Spaceflights 2
EVAs 3
Spaceflights
| No. | Launch | Orbiter | Duration |
| 1st | Apr 17, 1998 | Columbia STS-90 | 15 d 21 h 49 m 59 s (381 h 49 m 59 s) |
| 2nd | Aug 08, 2007 | Endeavour STS-118 - ISS | 12 d 17 h 55 m 34 s (305 h 55 m 34 s) |
| Cumulative time: | 28 d 15 h 45 m 33 s (687 h 45 m 33 s) | ||
EVAs
| No. | Date | Orbiter | Duration |
| 1st | Aug 11, 2007 | ISS USA | 6 h 17 m |
| 2nd | Aug 13, 2007 | ISS USA | 6 h 28 m |
| 3rd | Aug 18, 2007 | ISS USA | 5 h 2 m |
| Cumulative time: | 17 h 47 m | ||
Dafydd Williams.
Dafydd Williams in outer space
Astronaut Canada 6
Astronaut Canada 8
Astronaut 374
Astronaut 376
2001 Antropos.