Sir John Gurdon (1933–2025) was a Nobel-winning biologist.

John Gurdon may also refer to: John Gurdon (died 1623), MP for Sudbury John Gurdon (died 1679), MP for Ipswich, Suffolk and Sudbury John Gurdon (died 1758), MP for Sudbury John Everard Gurdon (1898–1973), First World War flying ace