The 1973 NCAA Men's Division I Basketball Tournament involved 25 schools playing in single-elimination play to determine the national champion of men's NCAA University Division (the predecessor to today's Division I, which would be created later in 1973) college basketball. It began on March 10, 1973, and ended with the championship game on March 26 in St. Louis, Missouri. A total of 29 games were played, including a third place game in each region and a national third place game.
UCLA, coached by John Wooden, won the national title with a 87–66 victory in the final game over Memphis State, coached by Gene Bartow. This gave UCLA their 7th consecutive title. Bill Walton of UCLA was named the tournament's Most Outstanding Player. This year's Final Four marked the first time the championship game was televised on a Monday night in prime time, a practice which continues as of 2009.