Gnaeus Manlius Vulso (f. 189 BC) was a Roman consul for the year 189 BC, together with Marcus Fulvius Nobilior. He led a victorious campaign against the Galatian Gauls of Asia Minor in 189 BC during the Galatian War. He may have been awarded a triumph in 187BCE. Florus has the senate turn down his application, but Livy describes his triumphal procession in elaborate detail. The Fasti Triumphales has a lacuna in what could be the relevant position. Aulus Manlius Cn.f. Vulso, consul eleven years later in 178 BC, may have been his younger brother.