| Darci Vargas | |
| Order2: | First Lady of Rio Grande do Sul |
| Term Label2: | In role |
| Term Start2: | 25 January 1928 |
| Term End2: | 9 October 1930 |
| President2: | Getúlio Vargas |
| Predecessor2: | Carlinda Borges |
| Successor2: | Delminda Aranha |
| Term Label1: | In role |
| Term Start1: | 3 November 1930 |
| Term End1: | 29 October 1945 |
| President1: | Getúlio Vargas |
| Predecessor1: | Sofia Pais de Barros |
| Successor1: | Luísa Linhares |
| Order: | First Lady of Brazil |
| Term Label: | In role |
| Term Start: | 31 January 1951 |
| Term End: | 24 August 1954 |
| President: | Getúlio Vargas |
| Predecessor: | Carmela Dutra |
| Successor: | Jandira Café |
| Birth Name: | Darci Lima Sarmanho |
| Birth Date: | 12 December 1895 |
| Birth Place: | São Borja, Rio Grande do Sul, Brazil |
| Death Place: | Rio de Janeiro, Guanabara, Brazil |
| Nationality: | Brazilian |
| Children: | Lutero, Jandira, Alzira, Maneco and Getulinho |
| Signature: | Darci Vargas assinatura.jpg |
Darci Lima Sarmanho Vargas (12 December 1895 – 25 June 1968) was the wife of Getúlio Vargas, former President of Brazil, and the First Lady of the country during two different periods (from 1930 to 1945 and from 1951 until her husband's suicide).
Darci and Getúlio Vargas, whom she married in March 1911, had five children. However, the president was an unfaithful husband. Aimée de Heeren, later the daughter-in-law of Fernanda Wanamaker, was reported to be one of his mistresses.
She became a notable philanthropist and founded many charitable organizations.