| Mamadou N'Diaye | |
| Fullname: | Mamadou N'Diaye |
| Birth Date: | 1984 1, mf=y |
| Birth Place: | Dakar, Senegal |
| Position: | Defender |
| Currentclub: | Portimonense S.C. |
| Clubnumber: | 6 |
| Years1: | 2006–2007 |
| Years2: | 2007– |
| Clubs2: | Portimonense S.C. |
Mamadou N'Diaye (born January 12, 1984) is a Senegalese football (soccer) defender. He currently plays for Portimonense S.C.