The Women's Flat Track Derby Association (WFTDA) is the international governing body for the sport of women's flat track roller derby. It sets the international standards for rankings, rules, and competition in the sport, and provides guidance and resources to aid development of roller derby. 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, a type of nonprofit organization.