| Benita Martínez Pastoriza | |
| President1: | Bartolomé Mitre |
| Office1: | First Lady of Argentina |
| Term Start1: | 12 October 1868 |
| Term End1: | 11 October 1874 |
| Predecessor1: | Delfina María Luisa de Vedia Pérez de Mitre |
| Successor1: | Carmen Miguens de Avellaneda |
| Birth Name: | Benita Martínez Pastoriza de Sarmiento |
| Birth Place: | San Juan, Argentina |
| Spouse: | Bartolomé Mitre |
Benita Martínez Pastoriza de Sarmiento (26 August 1819, San Juan, Argentina - 6 October 1890 in Buenos Aires, Argentina) was the second wife of Domingo Faustino Sarmiento, Argentina's First Lady, and the mother of Domingo Fidel Sarmiento. She was married to Domingo Castro y Calvo before being married to President Sarmiento.[1] [2] [3]