| Chidi Nwanu | |
| Birth Date: | 1 January 1967 |
| Birth Place: | Port Harcourt, Nigeria |
| Height: | 1.78 m |
| Position: | Centre-back |
| Years1: | 1983 |
| Clubs1: | Enyimba |
| Years2: | 1984–1985 |
| Clubs2: | Spartans |
| Years3: | 1986–1989 |
| Clubs3: | ACB Lagos |
| Years4: | 1989–1990 |
| Clubs4: | Westerlo |
| Years5: | 1990–1991 |
| Clubs5: | K.T.H. Diest |
| Caps5: | 29 |
| Goals5: | 2 |
| Years6: | 1991–1993 |
| Clubs6: | Beveren |
| Caps6: | 75 |
| Goals6: | 4 |
| Years7: | 1993–1995 |
| Clubs7: | Anderlecht |
| Caps7: | 14 |
| Goals7: | 0 |
| Years8: | 1995–1996 |
| Clubs8: | Sint-Truiden |
| Caps8: | 18 |
| Goals8: | 0 |
| Years9: | 1996–1997 |
| Clubs9: | Anderlecht |
| Caps9: | 2 |
| Goals9: | 0 |
| Years10: | 1997–1998 |
| Clubs10: | RKC Waalwijk |
| Caps10: | 7 |
| Goals10: | 0 |
| Nationalyears1: | 1989–1997 |
| Nationalteam1: | Nigeria |
| Nationalcaps1: | 12 |
| Nationalgoals1: | 0 |
Chidi Nwanu (born 1 January 1967 in Port Harcourt) is a Nigerian former professional footballer who played as a centre-back. He won 12 caps for the Nigeria national team, and was part of the squads for the 1994 FIFA World Cup and the 1988 Summer Olympics.
In 1988, while playing for ACB Lagos, Nwanu was declared unwanted by coach Patrick Ekeji. Nwanu went on to play in lower divisions in Belgium before he was picked up by Jupiler League side K.S.K. Beveren. After three seasons he was bought by R.S.C. Anderlecht, who won the league twice during his stay. Nwanu played very few matches; he retired after an unsuccessful spell in RKC Waalwijk.