Bonifacio Lopez Mencias (14 May 1888 – c. January 1944) was a Filipino physician, epidemiologist, guerrilla sympathizer, and martyr. He is best known for providing aid to the Philippine guerrillas in his capacity as Dean of the UST College of Medicine during the Japanese occupation of the Philippines – an act which led his capture and presumed death at the hands of the occupying forces just before the liberation of Manila.