William Carney (July 1, 1942 – May 22, 2017) was an American politician from New York who served in the Suffolk County, New York Legislature and United States House of Representatives as a member of the Conservative and Republican parties. He is the only registered member of the Conservative Party of New York State to be elected to the United States House of Representatives. He is one of two members of the Conservative Party to be elected to the United States Congress along with James L. Buckley, who was elected to the United States Senate from New York's Class I seat in 1970.