John Colvin may refer to:
John Russell Colvin (1807–1857), former lieutenant governor of India John O. Colvin (born 1946), U.S. Tax Court judge John Colvin (diplomat) (1922–2003), British Ambassador - Outer Mongolia John Colvin (politician), South Dakota legislator (1895–1898) and Speaker of the South Dakota House of Representatives (1897–1898) Jack Colvin, American character actor John Colvin (engineer)