The 2015 World Indoor Lacrosse Championship (WILC) was the fourth international box lacrosse championship organized by the Federation of International Lacrosse every four years. The 2015 WILC was hosted by the Onondaga Nation, south of Syracuse, New York, and took place between September 18 and 27. Canada defeated the host Iroquois Nationals 12–8 in the gold medal game, the same finals match-up featured in the first three indoor championships. Since the WILC started in 2003, Team Canada is undefeated with an overall record of 23–0.