| Mamadou N'Diaye | |
| Birth Date: | 28 May 1995 |
| Birth Place: | Thiès, Senegal |
| Height: | 1.74 m |
| Position: | Left-back |
| Currentclub: | Othellos Athienou |
| Clubnumber: | 25 |
| Years1: | 2013–2017 |
| Clubs1: | Montpellier B |
| Caps1: | 41 |
| Goals1: | 5 |
| Years2: | 2015–2017 |
| Clubs2: | Montpellier |
| Caps2: | 12 |
| Goals2: | 0 |
| Years3: | 2017–2019 |
| Clubs3: | Avranches |
| Caps3: | 37 |
| Goals3: | 2 |
| Years4: | 2017–2019 |
| Clubs4: | Avranches B |
| Caps4: | 7 |
| Goals4: | 3 |
| Years5: | 2019–2020 |
| Clubs5: | Villefranche |
| Caps5: | 17 |
| Goals5: | 0 |
| Years6: | 2020–2023 |
| Clubs6: | Le Puy |
| Caps6: | 59 |
| Goals6: | 5 |
| Years7: | 2023– |
| Clubs7: | Othellos Athienou |
| Caps7: | 9 |
| Goals7: | 1 |
| Nationalyears1: | 2014 |
| Nationalteam1: | Senegal |
| Nationalcaps1: | 1 |
| Nationalgoals1: | 0 |
| Club-Update: | 10:38, 4 November 2023 (UTC) |
Mamadou N'Diaye (born 28 May 1995) is a Senegalese professional footballer who plays as a left-back for Cypriot club Othellos Athienou. In 2014, he made one appearance for the Senegal national team.
Le Puy