Thomas Husler Greene (29 May 1844 – 7 September 1903), who performed as Fred Clifton, was an English opera singer and actor known for creating three roles in the early Gilbert and Sullivan comic operas: the Notary in The Sorcerer (1877), the Boatswain in H.M.S. Pinafore (1878) and the Sergeant of Police in The Pirates of Penzance (1879).