Hazen is a city in Prairie County, Arkansas, United States. The population was 1,637 at the 2000 census.
Hazen is located at 34°47′47″N 91°34′0″W / 34.79639°N 91.566667°W / 34.79639; -91.566667 (34.796306, -91.566536).
According to the United States Census Bureau, the city has a total area of 3.7 square miles (9.5 km²), all of it land. Included is a 0.25-mile wide strip of annexed land along Interstate 40 in the entire Prairie County. Nearby towns are Des Arc, De Valls Bluff, Ulm and Fredonia (Biscoe).