Quercus brandegeei is a rare Mexican species of plant in the beech family. It has been found only in the southern part of the State of Baja California Sur in northwesternMexico. Quercus brandegeei is an evergreen tree up to 20 meters tall. Leaves are elliptical, not lobed, the blades up to 65 mm long and tapering at both ends, sometimes with no teeth on the edge but sometimes with a few pointed teeth. The species is threatened by habitat loss.