The 1983 NCAA Division I Tennis Championships were the 37th annual NCAA Division I Men's Tennis Championship and the 2nd 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 Albuquerque, New Mexico, hosted by the University of New Mexico. 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 Stanford, their 7th team national title. The Indians defeated SMU in the final round, 5–4. The men's singles title was won by Greg Holmes from Utah, and the men's doubles title was won by Allen Miller and Ola Malmqvist from Georgia.
The women's team championship was won by USC, their first title. The Trojans defeated Trinity (Texas) in the final round, 8–1. The women's singles title was won by Beth Herr from USC, and the women's doubles title was won by Louise Allen and Gretchen Rush from Trinity (TX).