Andover Town Hall is the historic town hall of Andover, Massachusetts. It is located at 20 Main Street, between Park and Barnard Streets. The 2+1⁄2 story Romanesque Revival red brick building was constructed in 1858, not long after the separation of North Andover. It was designed by Boston architect Theodore Voelkers and built by local builders Abbott & Clement. The building design echoed that of the mills that dotted the town. It was listed on the National Register of Historic Places in 1982.