1984 NCAA Division III men's basketball tournament

The 1984 NCAA Division III men's basketball tournament was the tenth annual single-elimination tournament to determine the national champions of National Collegiate Athletic Association (NCAA) men's Division III collegiate basketball in the United States.

Held during March 1984, the field included 32 teams and the final championship rounds were contested at Calvin College in Grand Rapids, Michigan.

Wisconsin–Whitewater defeated Clark (MA), 103–86, to claim their first NCAA Division III national title.