Mariana Victoria of Spain was an Infanta of Spain by birth and was later the Queen of Portugal as the wife of King Joseph I. She acted as regent of Portugal in 1776–1777, during the last months of her husband's life, and as advisor to her daughter, Maria I of Portugal, during her reign.
- Occupation
- regent
- Position held
- Consort of Portugal, Regent of Portugal
- Citizenship
- Spain, Kingdom of Portugal
- Born
- March 31, 1718, 1718
- Died
- January 15, 1781, 1781
