Butch Cassidy, notorious Wild West criminal

David Cassidy, American musician, actor and erstwhile teen idol of 'Partridge Family' fame

Eva Cassidy, American singer

Proinsias Cassidy, fictional character (Irish vampire from Garth Ennis's graphic novel "Preacher").

Hopalong Cassidy, fictional character

Black Tom Cassidy, fictional character

Cassidy O'Reilly, American wrestler

Cassidy, the self-titled upcoming fourth album by Cassidy.

Bill Cassidy, American politician and physician

Jack Cassidy, Irish-American actor

Donie Cassidy, Irish politician and businessman

Michael Cassidy, Canadian politician

Ted Cassidy, American actor

Katie Cassidy, American celebrity

Maggie Cassidy, the title of a novel by Jack Kerouac

Christopher Cassidy, American astronaut

Shaun Cassidy, American celebrity

Joanna Cassidy, American actress

Scott Cassidy, American baseball player

Elaine Cassidy, actress

Stephen Cassidy, American labor leader

Cassidy Cruise, South African glamour model

Ed Cassidy, American (?) drummer

Natalie Cassidy, English soap actress

William F. Cassidy, American military

Harry Cassidy, Canadian academic and social reformer

Cassidy, British Columbia, a settlement and airport in Canada

Michael Cassidy (actor), American actor

Claudia Cassidy, American critic

Bernard Matthew Cassidy, British soldier

John Cassidy (baseball player), American baseball player

John Cassidy (artist), Irish sculptor and painter

Joseph "Joe" Cassidy, Scottish football player

Quenton Cassidy, fictional character

Patrick Cassidy (composer), Irish composer

John Cassidy (journalist), business journalist and published author

John Cassidy (magician), American magician

Cassidy's Ltd., a defunct Canadian company

James Cassidy, several people

Bob Cassidy, Mentalist, speaker and author

Patrick Cassidy (actor), American actor

Cassidy (O'Caiside in Irish) is a common Irish surname. The surname translates to 'descendent of Caiside'. The family were a sept of County Fermanagh. The Caiside's were originally a medical family, who were hereditary physicians to the Maguires.^[1] Cassidy may refer to the following:

Cassidy (musician), lead singer of Antigone Rising

Cassidy, a role played by actor Sam Slovick in the television show, Fame

Kasidy Yates, a character on Star Trek: Deep Space Nine.