The Great Western Lacrosse League, also known as the GWLL, was an NCAA Division I men's college lacrosse athletic conference that existed from 1994 to 2009. The conference was created when the NCAA instituted automatic qualifiers to the NCAA championship tournament; in so doing, it eliminated the "western region" bid.
The GWLL ceased operations in 2010, as a result of Notre Dame's 2008 decision to leave the conference for the newly established Big East lacrosse conference in 2010; the remaining GWLL schools, including the Air Force Academy, University of Denver, The Ohio State University, Quinnipiac University, and Bellarmine University, joined the ECAC, as a five-team GWLL would no longer have been eligible to receive an automatic bid to the NCAA championship tournament under the rule requiring conferences to have at least six members to qualify for the bid.