Hamburg is a city in Ashley County, Arkansas, United States. The population was 3,039 at the 2000 census. The city is the county seat of Ashley County.
Hamburg is located at 33°13′39″N 91°47′54″W / 33.2275°N 91.79833°W / 33.2275; -91.79833 (33.227369, -91.798472). According to the United States Census Bureau, the city has a total area of 3.4 square miles (8.8 km²), all of it land.
The current mayor of Hamburg is Dane Weindorf. Former mayors include Thomas Crow Hundley, a World War I veteran.