Mariano Garchitorena y Chereau (February 12, 1898 – October 1, 1961) was a Filipino politician of Spanish-French descent. Garchitorena was the son of Don Andres Garchitorena and a French lady, Margarite Chereau. He was married to Dona Caridad Pamintuan. He was the cousin of guerrilla Major Don Tomas T. Garchitorena and the brother of the actor Salvador A. Garchitorena, grandfather of Anjo Yllana, Jomari Yllana, and . He was also the uncle of Justice Francis Garchitorena, actor Andres Centenera and TV and radio star in the 1960s, Andres Garchitorena, brother of Stellita of Hanawan, Camarines Sur.