Peter Thorp Fay (January 18, 1929 – January 31, 2021) was an American lawyer and politician. He was a Judge of the United States Court of Appeals for the Eleventh Circuit from 1981 until his death. He was nominated by President Ronald Reagan. He was the United States District Judge of the United States District Court for the Southern District of Florida from 1970 to 1976. Fay was nominated by President Gerald Ford. He was born in Rochester, New York.