| Sara del Campo | |
| Office: | First Lady of Chile |
| Term Label: | In role |
| Term Start: | 18 September 1906 |
| Term End: | 16 August 1910 |
| President: | Pedro Montt |
| Predecessor: | María Errázuriz |
| Successor: | Mercedes Valdés Cuevas |
| Birth Name: | Sara del Campo Yávar |
| Birth Date: | 31 December 1855 |
| Birth Place: | Santiago, Chile |
| Death Place: | Santiago, Chile |
| Nationality: | Chilean |
| Parents: | Evaristo del Campo Madariaga Antonia Yávar Ruiz de Cabrera |
Sara del Campo Yávar (31 December 1855 in Santiago – 30 August 1942 in Santiago) was First Lady of Chile from 1906 to 1910, and the wife of President Pedro Montt.
She was the daughter of Evaristo del Campo Madariaga and of Antonia Yávar Ruiz de Cabrera. She married Pedro Montt on January 3, 1881, but they had no descendants.