The 2013 Men's Division I Basketball Tournament was a single-elimination tournament that involved 68 teams playing to determine the national champion of men's Division I college basketball. It began on March 19, 2013, and concluded with the championship game on April 8, 2013, at the Georgia Dome in Atlanta. The Louisville Cardinals defeated the Michigan Wolverines (the youngest team in the field of 68 teams) in the championship game by a score of 82–76. This was the 75th edition of the Men's Basketball Championship, dating to 1939.
Selection Sunday, when CBS announced the participants and tournament brackets, occurred on March 17, 2013. Atlantic Sun Conference champion Florida Gulf Coast, a relatively new school that held its first classes in 1997 and became Division I postseason eligible in 2011, made its first ever appearance in the tournament, winning two games to become the first ever #15 seed to advance to the Sweet Sixteen. Two other teams also earned their first ever Tournament victory: Ivy League champion Harvard and Mid-Eastern Athletic Conference (MEAC) champion North Carolina A&T. Liberty became the first 20-loss team in five years to earn an bid, having finished its season with five consecutive wins to secure the Big South championship and its automatic qualification. For the first time since 1977, the 10-member basketball selection committee did not choose a single team from the state of Texas for the tournament. For the first time since 1994, no team from Utah was selected for the tournament.
By winning the West Region, Wichita State became the first #9 seed and first Missouri Valley Conference (MVC) team to reach the Final Four since the tournament expanded to 64 teams in 1985. The last #9 seed to reach the Final Four was Penn, and the last MVC team to do so was Indiana State, both in 1979. Syracuse also reached the Final Four.