John Slade may refer to: John Slade (merchant) (1719–1792), British sea captain, shipowner and merchant John Slade (field hockey) (1908–2005), German hockey player John Slade (politician) (1819–1847), merchant and politician in Newfoundland John Slade (British Army officer) (1843–1913) John Slade, English schoolmaster and Roman Catholic martyr, see John Bodey John Slade, protagonist of Shadowgun, see Shadowgun John F. Slade III (born 1943), American judge Sir John Slade, 1st Baronet (1762–1859), British soldier during the Napoleonic Wars