The 1983–84 NCAA Division I men's basketball season began in November 1983 and ended with the Final Four in Seattle, Washington on April 2, 1984. The Georgetown Hoyas won their first NCAA national championship with an 84–75 victory over the Houston Cougars, who were making their third consecutive appearance in the Final Four.
Beginning in 1983–84, the following rules changes were implemented:
If a team was in the bonus situation within the last two minutes of the game and all of overtime, common fouls resulted in two free throws. This rule was changed back to the one-and-one free throw situation after a month due to its unpopularity.
Several conferences were granted permission to experiment with a 45-second shot clock (either for the entire game or shut off in the last 4:00 of the second half) the three-point shot from 19 feet, and coaching boxes to limit coaches to their bench areas.