| Office: | First Lady of Guatemala |
| Term Start: | 23 March 1982 |
| Term End: | 8 August 1983 |
| Term Label: | In role |
| Predecessor: | Elsa Cirigliano |
| Successor: | Aura Rosario Rosal López |
| President: | Efraín Ríos Montt |
| Birth Name: | María Teresa Sosa Ávila |
| Birth Date: | 12 July 1930 |
| Birth Place: | Chimaltenango, Guatemala |
| Death Place: | Guatemala City, Guatemala |
| Children: | 3 (including Zury Ríos) |
María Teresa Sosa Ávila (12 July 1930 – 1 October 2018)[1] was a Guatemalan politician. She was the widow of President of Guatemala Efraín Ríos Montt and mother of Zury Ríos. She was the nominee for the Guatemalan Republican Front for the presidency in the election of 1995. However, the Citizen Registry annulled her candidacy because she could not be elected to the position under the express prohibition contained in Article 186, Subsection C of the Constitution. She was succeeded as her party's nominee by Alfonso Portillo, who subsequently won the 1999 election.[2] [3] [4]
Sosa died at home in Guatemala City on 1 October 2018 due to natural causes, six months after the death of her husband.[5] She was 88.