John McCullough
John McCullough is the name of:
- John McCullough (actor) (1837–1885), American actor
- John McCullough (rugby union) (born 1936), New Zealand rugby football player
- John Alexander McCullough (1860–1947), New Zealand politician
- John C. McCullough (1858–1920), American politician from California
- John G. McCullough (1835–1915), American politician and governor of Vermont
- John McCullough (basketball) (born 1956), American basketball player and coach
- John McCullough (poet), English poet