Early Life and Career Niang began his basketball career in Senegal, playing for local clubs before moving to France to further his professional aspirations.
Club Career In France, Niang played across various divisions of the national basketball league system. His professional journey included stints in the LNB Pro B, the second-tier professional league, as well as the Nationale Masculine 1 (NM1) and Nationale Masculine 2 (NM2). Notable clubs he has played for include:
- Saint-Quentin BB (France, LNB Pro B)
- ALM Évreux Basket (France, LNB Pro B)
- GET Vosges (France, NM1)
He also returned to play in the Senegalese domestic league, featuring for teams such as US Ouakam and ASC Ville de Dakar.
International Career Ousmane Niang has represented the Senegal national basketball team in international competitions, contributing to the squad in various FIBA-sanctioned events.