John Greaves (disambiguation)

John Greaves (1602–1652) was an English mathematician and antiquary.

John Greaves may also refer to:


 * John Greaves (musician) (born 1950), British bass guitarist and composer
 * John Edward Greaves (1846-1923), industrialist and British vice-consul at Berdiansk, Russian Empire.
 * John Ernest Greaves (1847–1945), Welsh slate mine owner and Lord Lieutenant of Caernarvonshire
 * John Whitehead Greaves (1807–1880), English businessman
 * Johnny Greaves (boxer) (born 1979), English boxer
 * Johnny Greaves (rugby league) (born 1943), Australian rugby player
 * Johnny Greaves (racing driver) (born 1966), American racetrack driver