| Was | Military personnel |
| From |
Turkey Algeria |
| Type | Military |
| Gender | male |
| Birth |
1725, İzmir, Turkey |
| Death |
1792, Constantine, Algeria |
Salah Bey ben Mostefa (Arabic: صالح باي; born 1725 in Izmir, died 1792 in Constantine), was the bey of Constantine in Ottoman Algeria from 1771 to 1792, and one of the most famous in the province. Salah Bey’s governance is marked by a victorious participation against the Invasion of Algiers (1775) and his works of urban planning in Constantine.