1978 NCAA Division I tennis championships

The 1978 NCAA Division I Tennis Championships were the 33rd annual tournaments to determine the national champions of NCAA men's college tennis. Matches were played during May 1978 at the Dan Magill Tennis Complex in Athens, Georgia on the campus of the University of Georgia. A total of three championships were contested: men's team, singles, and doubles.

The men's team championship was won by the Stanford, their fourth team national title. The Cardinal defeated UCLA in the final, 6–3. The men's singles title was won by John McEnroe from Stanford, and the men's doubles title went to John Austin and Bruce Nichols of UCLA.