| Luís Viana Neto | |
| Office: | Federal Deputy for Bahia |
| Term Start: | 1967 |
| Term End: | 1971 |
| Office2: | Federal Deputy for Bahia |
| Term Start2: | 1975 |
| Term End2: | 1979 |
| Office3: | Federal Deputy for Bahia |
| Term Start3: | 1987 |
| Term End3: | 1990 |
| Office4: | Federal Deputy for Bahia |
| Term Start4: | 1991 |
| Term End4: | 1995 |
| Office5: | Vice Governor of Bahia |
| Term Start5: | 1979 |
| Term End5: | 1983 |
| Governor5: | Antônio Carlos Magalhães |
| Predecessor5: | Edvaldo Correia |
| Successor5: | Edvaldo Flores |
| Office6: | Senator of Bahia |
| Term Start6: | 1990 |
| Term End6: | 1991 |
| Birth Date: | 7 November 1933 |
| Birth Place: | Salvador, Brazil |
| Death Place: | Salvador, Brazil |
| Spouse: | Solange Viana |
| Parents: | Mother: Julieta Pontes VianaFather: Luís Viana Filho |
| Profession: | Lawyer, businessman |
Luis Viana Neto (Salvador, 7 November 1933 – Salvador, 13 May 2022)[1] is a lawyer, businessman and politician who was a federal deputy, senator and deputy governor of Bahia.
Son of Luís Viana Filho and Julieta Pontes Viana. Lawyer with a BA in law from the Federal University of Bahia in 1955 and a Doctor of Law from the University of Paris in 1957, he was a professor at the institution where he graduated. 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. With pluripartisanship restored in the João Figueiredo government, he joined the PDS and was elected alternate to his father in the elections for the Federal Senate in 1982. 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. He died on May 13th, 2022.