| Birth Date: | 27 August 1971 |
| Birth Place: | Higashiōsaka, Osaka |
| Weight: | 202lbs |
| School: | Aida High School, Higashiosaka |
| University: | Meiji University |
| Ru Position: | Centre |
| Ru Amateuryears: | 1987-1990 1990-1994 |
| Ru Amateurclubs: | Aida Secondary School, Higashiosaka Meiji University RFC |
| Ru Clubyears: | 1994-2010[1] |
| Ru Proclubs: | Kobelco Steelers |
| Ru Nationalyears: | 1991-2005 |
| Ru Nationalcaps: | 79 |
| Ru Nationalpoints: | (45) |
(born Higashiōsaka, Osaka. August 27, 1971) is a former Japanese rugby union footballer. He played as a centre and was known for his powerful running and tackling.
He played for Meiji University and for Kobelco Steelers in the Japanese Top League.
Motoki had 79 caps representing Japan, scoring 9 tries, 45 points in aggregate, from 1991 to 2005. He was selected for four Rugby World Cup finals: in 1991, without playing; in 1995, playing in three matches; in 1999, again in three matches; and in 2003. He never scored in any of his World Cup presences.