The 1986 NCAA Division I Men's Swimming and Diving Championships were contested in March 1986 at the Indiana University Natatorium in Indianapolis, Indiana at the 63rd annual NCAA-sanctioned swim meet to determine the team and individual national champions of Division I men's collegiate swimming and diving in the United States. The men's and women's titles would not be held at the same site until 2006.
Stanford again topped the team standings, the Cardinal's second consecutive and third overall men's title.