The 2018 Big Sky Conference women's soccer tournament was the postseason women's soccer tournament for the Big Sky Conference held from October 31 to November 4, 2018. The five-match tournament took place at Wildcat Soccer Field, home of the regular-season champions Weber State Wildcats. The six-team single-elimination tournament consisted of three rounds based on seeding from regular season conference play. The Eastern Washington Eagles were the defending champions and did not successfully defend their title, losing to the Northern Colorado Bears in the quarterfinals. The fifth seeded Montana Grizzlies upset three teams along their way to a championship, beating Northern Colorado 1–0 in the final.[1][2][3]