No. 46 (Royal Marine) Commando was a battalion size formation of the Royal Marines, part of the British Commandos, formed in August 1943 during the Second World War. The Commando was assigned to the 4th Special Service Brigade and served in North-west Europe and took part in the D-Day landings, as well as operations around Ostend and Antwerp, before being disbanded after the war in January 1946.