Michael Cusack may refer to:
*Michael Cusack (Gaelic Athletic Association), Irish teacher and founder of the Gaelic Athletic Association
*Michael Cusack (animator), co-creator of ''Smiling Friends'' and ''YOLO: Crystal Fantasy''
*Michael Cusack (rugby union) (born 1984), rugby union footballer
*Michael Cusack (cyclist) (born 1955), Irish author and former racing cyclist
*Sir Michael Cusac-Smith, 3rd Baronet (1793–1859) of the Cusack-Smith baronets
{{hndis, Cusack, Michael