The 2018 NCAA Division I Women's Lacrosse Championship is the 37th annual single-elimination tournament to determine the national champion of Division I NCAA women's college lacrosse. The semifinal and championship rounds will be played at Kenneth P. LaValle Stadium in Stony Brook, New York from May 25–27, 2018. All other rounds were played at campus sites, usually at the home field of the higher-seeded team, from May 11–20.