Colonel Commandant Sir Richard Williams KCB (1764–1839) was a career British officer of the Royal Marines active during the American Revolutionary War, the French Revolutionary Wars, the Napoleonic Wars, and the War of 1812. Sir Richard Williams is notable for being the first commanding officer of the Royal Marine Artillery, and for subsequently commanding the Portsmouth Division of Royal Marines during 1827–1835. In American history he is remembered as the senior ranking officer of the Royal Marines to serve on the British North America and West Indies Station during the War of 1812.