The 2018 Women's National Invitation Tournament was an annual single-elimination tournament of 64 NCAA Division I teams that were not selected to participate in the 2018 Women's NCAA tournament. The tournament committee announced the 64-team field on March 12, following the selection of the NCAA Tournament field. The tournament began on March 14 and ended on March 31, with the championship game televised on the CBS Sports Network. In the championship game, Indiana defeated Virginia Tech, 65–57.