Pinus maximartinezii, called Martinez pinyon or big-cone pinyon, is a pine in the pinyon pine group, native to central Mexico. The range is highly localised, confined to a small area of the southern Sierra Madre Occidental in southern Zacatecas. It occurs at moderate altitudes, from 1800-2400 m and 21° North latitude, in warm and temperate, dry climate conditions.It is a small tree, reaching 5-15 m tall and with a trunk diameter of up to 50 cm.