Patrick Cassidy may refer to: Patrick Cassidy (actor) (born 1962), American actor in musical theatre and television Patrick Cassidy (composer) (born 1956), Irish composer of film soundtracks Patrick Cassidy (footballer) (1887–?), English professional footballer Patrick Sarsfield Cassidy (c. 1850–1903), Irish American journalist, poet and revolutionary Patrick F. Cassidy (1915–1990), United States Army officer