John Casey may refer to:
- John Casey (academic), British academic and a writer for The Daily Telegraph
- John Casey (Chuck), fictional character portrayed by Adam Baldwin on the television show Chuck
- John Casey (commentator) (born 1964), Australian journalist and sports broadcaster
- John Casey (mathematician) (1820—1891), Irish geometer
- John Casey (novelist) (born 1939), American novelist and translator
- John P. Casey, President of General Dynamics Electric Boat
- John J. Casey (1875—1929), Democratic member of the U.S. House of Representatives from Pennsylvania
- Jack Casey, John "Jack" Casey, (born 1935), member of the New Jersey General Assembly
Famous quotes containing the words john and/or casey:
“When women go wrong, men go right after them.”
—Harvey Thew, screenwriter, John Bright, screenwriter, and Lowell Sherman. Lady Lou (Mae West)
“Maybe it’s like Casey says. A fellow ain’t got a soul of his own. Just a little piece of a big soul. The one big soul that belongs to everybody.”
—Nunnally Johnson (1897–1977)