The Arlington Historical Society, founded in 1956, is a nonprofit educational organization incorporated under the laws of the Commonwealth of Virginia. The goal of the Arlington Historical Society is to conduct research and to preserve and disseminate knowledge relating to the history, archaeology, material culture, and geographical and socio-economic development of Arlington County, Virginia.

The society works toward this goal through its historic resources, including two historic properties and its artifact collection; original historical research and publications; the discovery, collection, preservation and exhibition of artifacts; and the presentation and dissemination of knowledge on the local history of Arlington County free to the public.

(Mission statement approved by the AHS Board of Directors on January 12, 1998.)