The Santa Fe Rugby Union (Spanish: Unión Santafesina de Rugby) is the governing body for rugby union in Santa Fe Province in Argentina. The union runs rugby competitions in the province of Santa Fe with the exception of Rosario clubs, who are part of the Unión de Rugby de Rosario. USR is one of the Argentine Rugby Union's 25 regional governing bodies. The Unión Santafesina also runs the Santa Fe team that represented the province in the now defunct Campeonato Argentino.