The Women's Flat Track Derby Association (WFTDA) is the international governing body of women's flat track roller derby representing more than 450 member and apprentice leagues on 6 continents. The mission of the WFTDA is to govern and promote the sport of flat track roller derby and revolutionize the role of women in sports through the collective voice of its member leagues around the world. The WFTDA sets the international standards for rankings, rules, and competition each year and provides guidance and resources to the sport of flat track derby.