Swampscott Town Hall, previously the Elihu Thomson House, is a historic building in Swampscott, Massachusetts. The house was designed by architect James T. Kelley and built in 1889 for the noted inventor, electrical engineer, and industrialist Elihu Thomson (1853-1937). Thomson was, with Edwin J. Houston, co-founder of the Thomson-Houston Electric Company which would later merge with Thomas Edison's Edison General Electric Company to become the General Electric Company. The house was built with an observatory, which no longer exists. It has housed Swampscott town offices since 1944, when it was given to the town by Thomson's heirs. The building was declared a National Historic Landmark in 1976 for its association with Thomson.

Swampscott is a town in Essex County, Massachusetts, United States, located 15 miles (24 km) up the coast from Boston in an area known as the North Shore. The population was 15,111 as of the 2020 United States Census. A former summer resort on Massachusetts Bay, Swampscott is today a fairly affluent residential community and includes the village of Beach Bluff, as well as part of the neighborhood of Clifton.