John Caulfield
John Caulfield may refer to:
- H. John Caulfield, American physicist
- John Caulfield (Australian footballer), Australian rules footballer
- John Caulfield (diplomat), American diplomat
- John Caulfield (colonist of Victoria), included in The Explorers and Early Colonists of Victoria
- John Caulfield (Irish footballer), former Irish footballer and current manager
- Jack Caulfield, American security operative and law enforcement officer in the Nixon administration