The field for the 2021 Hawaiian Airlines Diamond Head Classic will feature BYU (West Coast), tournament host school Hawai'i (Big West), Liberty (ASUN), Northern Iowa (MVC), South Florida (American), Stanford (Pac-12), Vanderbilt (SEC) and Wyoming (Mountain West). The 12th edition will be played at the SimpliFi Arena at Stan Sheriff Center in Honolulu, on December 22, 23 and 25.
Two teams in the 2021 field were a part of the NCAA postseason last season – BYU and Liberty. The field also includes two returning Hawaiian Airlines Diamond Head Classic participants – BYU (2015) and Northern Iowa (2015).