Stanley M. Isaacs (1882–1962) was a Republican politician from New York City who served as Manhattan Borough President from 1938 to 1941 and later as a member of the New York City Council from 1942 to 1962. He was Minority Leader of the Council from 1950 to 1962. An advocate for social justice, Isaacs is perhaps best known for his support for housing and the work he did with Mayor Fiorello LaGuardia, whom he helped to get elected.