John Hanmer

John Hanmer may refer to:


 * John Hanmer (MP died 1604), MP for Flint Boroughs (UK Parliament constituency)
 * John Hanmer, 1st Baron Hanmer (1809–1881), British politician
 * John Hanmer (bishop) (1574–1629), Welsh bishop of St. Asaph
 * Sir John Hanmer, 3rd Baronet
 * Sir John Hanmer, 1st Baronet