The 2003 NCAA Division II men's basketball tournament was the 47th annual single-elimination tournament to determine the national champion of men's NCAA Division II college basketball in the United States.
Officially culminating the 2002–03 NCAA Division II men's basketball season, the tournament featured, for the first time, sixty-four teams from around the country.
Northeastern State (32–3) defeated Kentucky Wesleyan in the final, 75–64, to win their first Division II national championship.
Location: Ovens Athletic Center Host: Queens University of Charlotte Location: Warden Arena Host: Rollins College Location: Wisdom Gymnasium Host: Tarleton State University Location: Cushing Coliseum Host: University of Nebraska at Kearney Location: Costello Gym Host: University of Massachusetts at Lowell Location: Lumpkin Center Host: Columbus State University Location: Student Development Center Gymnasium Host: Michigan Technological University Kentucky Wesleyan's participation in the 2002-2004 tournaments was vacated by the NCAA due to a widespread problem with athlete eligibility.
Location: George Q. Cannon Activities Center Host: Brigham Young University-Hawai'i Location: Jenkins Field House Host: Florida Southern College