John Bigelow (1817–1911) was an American diplomat.
John Bigelow may also refer to: John P. Bigelow (1797–1872), American politician John Bigelow, Jr. (1854–1936), American cavalry officer and son of American diplomat John Bigelow John Bigelow IV (born 2001), American golfer Jackie Cooper (1922–2011), child actor brought up as John Bigelow