The northern plains gray langur is a species of primate in the Cercopithecidae family. It is found in India on the lowlands north of the Godavari and Krishna rivers and south of the Ganges. It is thought to be introduced to western Bangladesh by Hindu pilgrims on the bank of the Jalangi River. Its natural habitats are subtropical or tropical dry forests and subtropical or tropical dry shrubland. It is threatened by habitat loss.