Major General John Robyns, KH (13 May 1780 – 22 March 1857) was a senior officer of the Royal Marines who served during the French Revolutionary Wars and earned historically noteworthy military distinctions on the North America and West Indies Station during the Napoleonic Wars and the War of 1812. As a battalion commander of Royal Marines, Captain John Robyns faced enemy forces which included his counterparts of the United States Marines at Bladensburg, Washington, Baltimore, and New Orleans. In his later years Robyns served one term as Mayor of Penzance (1840–41) in his native Cornwall.