Joseph Forer (11 August 1910 – 20 June 1986) was a 20th-century American attorney who, with partner David Rein, supported Progressive causes, including discriminated communists and African-Americans. Forer was one of the founders of the National Lawyers Guild and its DC chapter. He was also an expert in the "Lost Laws" of Washington, DC, enacted in 1872–1873, that outlawed segregation at business places.