The 2018 NCAA Division II men's basketball tournament is the 62nd annual single-elimination tournament to determine the national champion of men's NCAA Division II college basketball in the United States.

The eight regional winners met in the Elite Eight for the quarterfinal, semifinal, and championship rounds.

For the second consecutive year, the Elite Eight was held at the Sanford Pentagon in Sioux Falls, South Dakota.

The sixty-four bids are allocated evenly among the eight NCAA-designated regions (Atlantic, Central, East, Midwest, South, South Central, Southeast, and West), each of which contains three of the twenty-four Division II conferences that sponsor men's basketball.

Six teams qualified for their first NCAA Division II tournament in 2018: Lees–McRae, Ohio Dominican, Point Loma Nazarene, Saint Martin's, Southern Nazarene, and West Florida.