The chestnut-headed chachalaca (Ortalis ruficeps) is a bird in the family Cracidae, the chachalacas, guans, and curassows. It is endemic to Brazil.

The chestnut-headed chachalaca is 43 to 54 cm (1.4 to 1.8 ft) long and weighs 345 to 620 g (0.76 to 1.4 lb). It has a reddish-chestnut head, grayish brown upperparts, grayish underparts, and dark brown primary flight feathers.