John Cavanagh
John Cavanagh may refer to:
- John Cavanagh (archer), British Paralympian
- John Cavanagh (designer), London-based Irish fashion designer
- John Cavanagh (economist), Director of the Institute for Policy Studies in Washington, D.C., 1998–2021 and a founding fellow of the Transnational Institute
- John Cavanagh (fives player), Irish sportsman
- John Cavanagh (hatter), New York hatter, mayor of Norwalk, Connecticut