Ousmane Diop (born 9 December 1975) is a retired Senegalese footballer.
Diop played for Skoda Xanthi and Egaleo in the Greek Alpha Ethniki. He also had a spell with Dobrudzha Dobrich in the Bulgarian A PFG.
Diop made several appearances for the Senegal national football team and played at the 2000 African Cup of Nations finals.