Luis Viana Neto (November 7, 1933 – May 13, 2022) was a Brazilian lawyer, businessman and politician who was a federal deputy, senator and deputy governor of Bahia.

A civil construction and communications entrepreneur, he joined ARENA[2] and was elected federal deputy in 1966; however, little exercised his mandate for having assumed the Secretariat of Municipal Affairs and Urban Services when his father ruled Bahia (1967–1971).

Director of the Bank of the State of Bahia in the first government Antônio Carlos Magalhães was elected federal deputy in 1974 and was chosen vice-governor of the state when Magalhães returned to the Palace of Ondina on the Recommendation of President Ernesto Geisel in 1978.

Before the 1986 elections he broke with his traditional allies and collaborated with the victory of Waldir Pires as governor of Bahia being that Luís Viana Neto was elected federal deputy by the PMDB.

He assumed the term of senator after the death of his parent in July 1990 and that same year he was re-elected to his fourth term as federal deputy during which he migrated to the PFL.