The 9th Marine Infantry Brigade is a light armoured, amphibious unit of the Troupes de marine of the French Army.

The Troupes de Marine or TDM, sometimes simply referred to as "French Marines" in English, are one of the major components of the French Army and comprise several specialties: infantry, airborne, armoured cavalry, artillery, engineering, and transmissions (signals). Characterized by their fundamental vocation for service beyond the seas, including in French overseas territories and, formerly, in French colonies, the Marines have taken part in all French military campaigns since the corps' foundation, both on home soil and in theaters of operations around the world. They are stationed in Metropolitan France, in many French overseas departments and territories, as well as in Africa.