John Kavanagh

• John Kavanagh (actor), Irish actor
• John Kavanagh (Arizona politician), American politician from Arizona
• John Kavanagh (bishop), Catholic Bishop of Dunedin, 1949–1985
• John Kavanagh (martial artist), Irish martial arts coach
• John Kavanagh (Newfoundland politician), Newfoundland politician
• John Francis Kavanagh, Irish sculptor and artist