The 1984 NCAA Division I Tennis Championships were the 38th annual NCAA Division I Men's Tennis Championship and the 3rd annual NCAA Division I Women's Tennis Championship to determine the national champions of NCAA Division I men's and women's collegiate tennis. Each championship featured a singles, doubles, and team championship.
The men's tournaments were played in Athens, Georgia, hosted by the University of Georgia, while the women's tournaments were held in Los Angeles, California. The men's and women's tournaments would not be held at the same site until 2006.
The men's team championship was won by UCLA, their 15th team national title. The Bruins defeated defending national champion Cardinal in the final round, 5–4. The men's singles title was won by Mikael Pernfors (a Swedish national) from Georgia, and the men's doubles title was won by Kelly Jones and Jerome Jones from Pepperdine.
The women's team championship was won by Stanford, their second title in three years. The Cardinal defeated defending national champion USC in the final round, 6–0. The women's singles title was won by Lisa Spain from Georgia, and the women's doubles title was won by Elise Burgin and Linda Gates from Stanford.
This was the first time the men's and women's singles titles were won by players from the same school (Georgia).