Galfridus Walpole (1683 – 7 August 1726) was a Royal Navy officer, politician and postmaster general of the Kingdom of Great Britain. He lost his right arm after a naval battle against the French in Vado Bay, Italy, in 1711 and commanded ships for another nine years. He sat in the House of Commons from 1715 to 1721, when he took office as joint postmaster general.