Peter Sabin Willett, known as Sabin Willett, (born March 6, 1957) is an American lawyer and novelist, a partner with the Philadelphia-based law firm Morgan, Lewis & Bockius, formerly a partner at Bingham McCutchen. He lives near Boston, Massachusetts. He is perhaps best known as a defense lawyer for several Uighur prisoners at the Guantanamo Bay detainment camp.