John Reilly may refer to:
- John Reilly (singer) (1926–1969), Irish traveller and source singer
- John Reilly (lawyer), American lawyer, author and businessman
- John Reilly (Pennsylvania) (1836–1904), U.S. Representative from Pennsylvania
- John Reilly (actor) (born 1936), American soap opera actor
- John Reilly (judge) (born 1947), Canadian politician, activist and retired judge
- John C. Reilly (born 1965), American film and television actor
- John Reilly (baseball) (1858–1937), American baseball player
- John R. Reilly (1928–2008), adviser to Democratic presidential candidates
- John Reilly (footballer born 1962), Scottish former professional footballer
- John Reilly (Australian footballer) (born 1942), former Australian rules footballer
- John Reilly, North Carolina State Auditor, 1873–1877
Famous quotes containing the words john and/or reilly:
“Is that a gun in your pocket, or are you just glad to see me?”
—Harvey Thew, screenwriter, John Bright, screenwriter, and Lowell Sherman. Lady Lou (Mae West)
“Oh, you cold-blooded English. You’ll be the death of me.”
—Norman Reilly Raine (1895–1971)