The Women's Flat Track Derby Association (WFTDA) is an association of women's flat track roller derby leagues around the world. The organization was founded in April 2004 as the United Leagues Coalition (ULC) but was renamed in November 2005. It is registered in Raleigh, North Carolina as a 501(c)(6) business league organization, which is a type of non-profit organization. According to its mission statement, the organization "promotes and fosters the sport of women's flat track roller derby by facilitating the development of athletic ability, sportsmanship, and goodwill among member leagues" and its governing philosophy is "by the skaters, for the skaters" — the primary owners, managers, and operators of each member league and of the association are women skaters, although this does not pr