James Cassidy
James, Jamie or Jim Cassidy may refer to:
- Jim [Cassidy (footballer)], Scottish football player
- James Edwin Cassidy, American Roman Catholic bishop in Massachusetts
- James H. Cassidy, United States Representative from Ohio
- Jim Cassidy (coach), former Australian rules football coach
- James Cassidy (musician), American bass and keyboard player
- Jim Cassidy, stage name of Rick Cassidy, American pornographic actor and model
- Jim Cassidy (jockey), New Zealand jockey
- Jamie Cassidy, English footballer
- Jimmy Cassidy (singer), English singer in the 1960s