The Lacrosse World Championships (WLC) are organized by the Federation of International Lacrosse (FIL) for men and by the International Federation of Women's Lacrosse Associations (IFWLA) for women . The respective world championship is held every four years - the women's championship always one year before the men's championship. Since the beginning of the tournament, the US men's team has become world champions nine times; Canada made it twice . For women, on the other hand, it is a relatively even competition for the championship title between the USA , Australia , Canada and England , with the USA leading the way. The women's team of the USA has been world champion seven times, the women's team of Australia has been world champion twice. The 2010 men's world championship had 30 national participation, the 2009 women's world championship 16 national participation - in both cases the highest participation rate in the history of the lacrosse world championships. A special feature of the world championships is the participation of the "Iroquios", as representatives of the natives of North America, to whom the sport can be traced back.