Water polo is inducted in the Pan American Games since the first edition of the multi-sports event in 1951, when Buenos Aires was the host. The women's event made its debut in 1999. The United States is the most successful country, winning 16 out of 22 tournaments. Men's tournament Participating nations Women's tournament Participating nations Medal table See also UANA Water Polo Cup Swimming Union of the Americas References Sports123 Sports at the Pan American Games Pan American Games Pan American Games