John Slade

• John Slade (merchant), British sea captain, shipowner and merchant
• John Slade (field hockey), German hockey player
• John Slade (politician), merchant and politician in Newfoundland
• John Ramsay Slade, British general
• John Slade, English schoolmaster and Roman Catholic martyr, see John Bodey
• John Slade, protagonist of Shadowgun, see Shadowgun
• John F. Slade III, American judge
• Sir John Slade, 1st Baronet, British soldier during the Napoleonic Wars