Patrick Cassidy

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