Shamrock Rovers Football Club are an Irish professional football club based in the South Dublin suburb of Tallaght . The club's senior team competes in the League of Ireland Premier Division and it is the most successful club in the Republic of Ireland . [ 2 ] The club has won the League of Ireland title a record 22 times and the FAI Cup a record 26 times. [ 3 ] Shamrock Rovers have supplied more players to the Republic of Ireland national football team (64) than any other club. In All-Ireland competitions, such as the Intercity Cup , they hold the record for winning the most titles, having won seven cups overall. [ 4 ]