| Souleymane Diallo | |
| Birth Date: | 2 December 1987[1] |
| Position: | Goalkeeper |
| Height: | 1.79 m |
| Birth Place: | Nouakchott, Mauritania |
| Nationalteam1: | Mauritania |
| Nationalyears1: | 2006–2019 |
| Nationalcaps1: | 76 |
| Ntupdate: | 2 July 2019 |
| Nationalgoals1: | 0 |
| Clubs1: | ASAC Concorde |
| Years1: | 2005–2008 |
| Clubs2: | Tevragh-Zeina |
| Clubs3: | Nouadhibou[2] |
Souleymane Diallo (ar|سليمان ديالو born 2 December 1987) is a Mauritanian professional footballer who plays as a goalkeeper.