| Birth Name: | John Fa'aususa Clarke |
| Birth Date: | 1975 5, df=yes |
| Birth Place: | Lower Hutt, New Zealand |
| Weight: | 210 lb |
| Ru Position: | Scrum-half |
| Amatyears1: | 1995 |
| Amatyears2: | 2003 |
| Amatteam1: | Toa |
| Amatteam2: | Western Suburbs |
| Provinceyears1: | 1995-1998 |
| Provinceyears2: | 2003 |
| Province1: | Wellington |
| Province2: | Horowhenua |
| Provinceapps1: | 3 |
| Provinceapps2: | 4 |
| Provincepoints1: | 5 |
| Provincepoints2: | 20 |
| Repyears1: | 1997–1999 |
| Repcaps1: | 5 |
| Reppoints1: | 10 |
John Fa'aususa Clarke (born 31 May 1975 in Lower Hutt) is a New Zealand-born Samoan rugby union player. He played as a scrum-half.
His first international cap was against Tonga, at Apia, on 28 June 1997. He was part of the 1999 Rugby World Cup roster, where he only played against Japan, at Wrexham.