Quercus martinezii is a Mexican species of tree in the beech family. It has been found in Jalisco, Michoacán, Oaxaca, and Chiapas. Quercus martinezii is a tall forest tree up to 25 meters tall with a trunk 50 cm or more in diameter. Leaves are thick and stiff, gray-green on the upper surface, lighter on the underside, lance-shaped or egg-shaped with irregular teeth.