The 1986 NCAA Division I Men's Tennis Championships were the 40th annual championships to determine the national champions of NCAA Division I men's singles, doubles, and team collegiate tennis in the United States.

The Cardinal defeated Pepperdine in the final round, 5–2.

The men's singles title was won by Dan Goldie from Stanford.

The men's doubles title was won by Rick Leach and Tom Pawsat from USC.

The men's and women's tournaments would not be held at the same venue until 2006.