Club de Deportes Unión San Felipe, commonly known as Unión San Felipe or simply San Felipe, is a professional football club based in the city of San Felipe in Chile's Valparaíso region. Founded on October 16, 1956, the club currently competes in 'Primera B', the second tier of the Chilean football league system.
Unión San Felipe is best known for its historic success in the early 1970s. It became the only club in the history of Chilean football to win the Second Division (1970) and the First Division in consecutive seasons—claiming the 'Primera División de Chile' title in 1971, just one year after earning promotion. This victory secured their spot in the 1972 Copa Libertadores, marking their debut at the continental level.
The club has also won the 'Primera B' championship twice (1970 and 2009) and claimed the 'Copa Chile' title in 2009, which qualified them for the 2010 'Copa Sudamericana'. San Felipe's home ground is the 'Estadio Municipal de San Felipe', a traditional stadium with a capacity of approximately 12,000 spectators.
Nicknamed "El Uni-Uni," the club is renowned for its regional identity, strong local fanbase, and the historic role it played in challenging the dominance of Chile's major urban teams during the early 1970s.
