Arnegard is a city in McKenzie County, North Dakota in the United States. The population was 115 at the 2010 census. Arnegard was founded in 1913.
Arnegard is located at 47°48′29″N 103°26′19″W / 47.808145°N 103.438621°W / 47.808145; -103.438621.
According to the United States Census Bureau, the city has a total area of 0.2 square miles (0.6 km2), all of it land.