#10. River Plate
Club Atletico River Plate is by far the most successful football club in Argentina after an incredible history. The club was founded in 1901, just four years before and a stone’s throw away from the formation of rivals Boca Juniors in 1905. In all, the club has won an incredible 36 Argentinean League titles over the years with the first one coming in 1920. River Plate dominated Argentinean football for large periods in the 1940s, 1950s, and 1990s, and while the club has dropped off the pace of late, River Plate is still an Argentinean institution. Outside of the domestic league, the club has also won three Copa Libertadores including the 2015 title.