Tony MacMahon ( Ennis, Co. Clare, Ireland, 1939) is an Irish button accordion player and radio and television broadcaster.

Tony MacMahon's chief early inspiration, accordionist Joe Cooley, was a frequent caller at the MacMahon home from 1949 until 1954, when Cooley emigrated to the USA. MacMahon has described the memory of Cooley's music as being "embedded in his DNA.". Other influences from the locality were piper Willie Clancy and fiddler Bobby Casey.