John Hanna
John Hanna may refer to:
- John Hanna (ice hockey), Montreal Canadiens hockey player
- John Clark Hanna, founder of the original ELF
- John A. Hanna, United States Representative from Pennsylvania
- John Hanna (Indiana politician), United States Representative from Indiana
- John Hanna (baseball), 19th century major league baseball catcher
- John G. Hanna, sailboat designer
- John William Hanna, Canadian merchant and politician
- John Hanna (prison officer), Northern Irish prison officer convicted of helping the IRA murder a colleague
- John Hanna (rower), British rower
- Jack Hanna, American zookeeper