Alf Binder was an Australian rugby league footballer who played in the 1920s and 1930s. He played for South Sydney in the NSWRL competition during the club's first golden era.
In 1929, Binder played 17 games for Souths including the 1929 grand final victory over Newtown which Souths comprehensively won 30-10 at the Sydney Sports Ground.
Binder played one final season with Souths in 1930 before retiring at the end of the season. He later played for Goulburn.[2][3][4]