William "Bill" Cartwright (c. 1923 – June 7, 2012) was a Bahamian politician, realtor and magazine publisher. Cartwright, together with Sir Henry Milton Taylor and Cyril Stevenson, co-founded the Progressive Liberal Party (PLP) in 1953, the first national political party to be established in the Bahamas. He was the last surviving member of the PLP's three founders. Cartwright was a native of Long Island, Bahamas. He was elected to the Bahamas House of Assembly, the lower house of Parliament, in 1949 as a representative of Cat Island. He served in parliament for seven years.