The 2002–03 Oklahoma Sooners men's basketball team represented the University of Oklahoma as a member of the Big 12 Conference during the 2002–03 NCAA Division I men's basketball season.

The team was led by head coach Kelvin Sampson and played its home games in the Lloyd Noble Center.

After reaching the Elite Eight by beating South Carolina State, California, and Butler, the Sooners fell to No.

3 seed and eventual National champion Syracuse in the regional final to finish the season 27–7 (12–4 Big 12).

This article related to sports in Oklahoma is a stub.