Constance Winsor Green (née McLaughlin; August 21, 1897, in Ann Arbor, Michigan – December 5, 1975, in Annapolis, Maryland), best known as Constance McLaughlin Green, was an American historian.

After graduation, Green served as a part-time instructor at Mount Holyoke from 1925 to 1932.

After leaving Smith, Green accepted the position of historian at Springfield Armory during the Second World War.

[2] In 1954, under a six-year grant from the Rockefeller Foundation, Green became director of the Washington History Project, which was administrated by American University.

Her works on this subject include American Cities in the Growth of the Nation (1957), The Rise of Urban America (1965), and The Secret City: A History of Race Relations in the Nation's Capital (1967).