The North Atlantic Conference men's basketball tournament is the annual conference basketball championship tournament for the NCAA Division III North Atlantic Conference. It is a single-elimination tournament and seeding is based on regular season records.^[1]

The winner, declared conference champion, receives the North Atlantic's automatic bid to the NCAA Men's Division III Basketball Championship.

• Record is incomplete prior to 2004

• Results incomplete before 2004

• Schools highlighted in pink are former members of the North Atlantic
• Eastern Nazarene, Maine Maritime, Maine–Presque Isle, SUNY Morrisville, and Vermont State–Johnson, and have not yet qualified for the tournament finals
• Becker, Cazenovia, Green Mountain, Mount Ida, and Wheelock never qualified for the tournament finals as North Atlantic members