1902–03 collegiate men's basketball season in the United States

The 1902–03 collegiate men's basketball season in the United States began in December 1902, progressed through the regular season, and concluded in March 1903.

Season headlines

 * Minnesota (13–0) went undefeated for the second consecutive season.
 * In February 1943, the Helms Athletic Foundation retroactively selected Yale as its national champion for the 1903–04 season.
 * In 1995, the Premo-Porretta Power Poll retroactively selected Minnesota as its national champion for the 1903–04 season.

Conference winners
NOTE: The Western Conference (the future Big Ten Conference) did not sponsor an official conference season or recognize a regular-season champion until the 1905–06 season. A few intermural games took place within the conference during the 1902–03 season. In 1902–03, Minnesota (13–0) and (8–0) both went undefeated.

Independents
A total of 39 college teams played as independents. Among them, Bucknell (10–0), (13–1),  (10–2),  (12–3), and  (15–6) won 10 or more games.