Moenkopi (Hopi: Mùnqapi, Navajo: Oozéí Hayázhí) is a census-designated place (CDP) in Coconino County, Arizona, United States, adjacent to the southeast side of Tuba City off U.S. Route 160. The population was 964 at the 2010 census.
A Hopi community, it was founded in 1870 as a summer farming area by people from the Hopi Third Mesa village of Oraibi, Arizona. It is 40 miles (64 km) west of Third Mesa and is divided into the villages of Upper Moenkopi and Lower Moenkopi. It lies in a 250.306 km2 (96.644 sq mi) exclave of the Hopi Reservation which is separated from the main part of the reservation which lies to the east. Both parts are surrounded by Navajo Nation territory. The smaller section comprises only 3.8 percent of the Hopi Reservation's land area and 13.2 percent (916 persons) of its population.