The 2002–03 NCAA Division III men's ice hockey season began on October 18, 2002, and concluded on March 22 of the following year. This was the 30th season of Division III college ice hockey.
The NCAA changed the national tournament format to have all rounds be Single elimination. As a result, the mini-game was eliminated from the Championship.
Division III Championship: March 8, 2003 Division II Championship: March 8, 2003 † indicates conference regular season champion * indicates conference tournament champion ~ indicates Division II Tournament champion
Division III Championship: March 8, 2003 Division II Championship: March 8, 2003 † indicates conference regular season champion * indicates conference tournament champions ~ indicates Division II Tournament champion