The 2003–04 NCAA Division I men's basketball season began on November 10, 2003, progressed through the regular season and conference tournaments, and concluded with the 2004 NCAA Men's Division I Basketball Tournament Championship Game on April 5, 2004, at the Alamodome in San Antonio, Texas.

The Connecticut Huskies won their second NCAA national championship with an 82–73 victory over the Georgia Tech Yellow Jackets.

Beginning in 2003–04, the following rules changes were implemented:[2] The top 25 from the AP and ESPN/USA Today Coaches Polls November 13, 2003.

[69] Saint Joseph's finished with a 4–0 record in head-to-head competition among the Philadelphia Big 5.

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