Cartwright is an unincorporated community in northwestern McKenzie County, North Dakota, United States. The community is named for Samuel George Cartwright, a rancher, trapper, and hunter, who was the first settler in the area. It lies along North Dakota Highway 200 west of the city of Watford City, the county seat of McKenzie County. Its elevation is 1,906 feet (581 m). Although it is unincorporated, it has a post office, with the ZIP code of 58838.
According to the Köppen Climate Classification system, Cartwright has a semi-arid climate, abbreviated "BSk" on climate maps.