Cyril St. John Stevenson (July 13, 1914 – November 6, 2006) was a Bahamian politician and newspaper publisher. Stevenson, Sir Henry Milton Taylor and William Cartwright, co-founded the Progressive Liberal Party (PLP) in 1953, the first national political party to be established in the Bahamas.
Stevenson was born in Nassau, Bahamas, on July 13, 1914. He was the youngest child of Henry Macauley "Harry" Stevenson and Georgianna Louise "Lulie" Stevenson. His father died in 1915 when he was just fifteen months old. He began a career in journalism as a reporter for the Bahamas Weekly News.
In 1953, Stevenson, Sir Henry Milton Taylor and William Cartwright, co-founded the Progressive Liberal Party (PLP). The following year, Stevenson became the editor and publisher of the now defunct newspaper, The Nassau Herald. At times, Stevenson used his editorial control of the Nassau Guardian to promote the views and candidates of his PLP party.
Stevenson was elected to the Bahamas House of Assembly, the lower house of Parliament, from the Andros and the Berry Islands constituency in 1956. He joined the "Magnificent Six," a group of six MPs who formed the first opposition block in the Bahamas parliament. The group of six PLP parliamentary members consisted of Stevenson, Randol Fawkes, Lynden Pindling, Milo Butler, Sammy Isaacs, and Clarence Bain. Stevenson was re-elected to the Assembly in the 1962 election, again representing portions of Andros Island and the Berry Islands. He lost his re-election in 1967, when he was as an independent candidate and left the PLP.