| Official Name: | São Raimundo Nonato |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Type2: | State |
| Subdivision Name: |  Brazil |
| Subdivision Name1: | Northeast |
| Subdivision Name2: | Piauí |
| Established Title: | Founded |
| Established Date: | June 26, 1912 |
| Area Note: | [1] |
| Area Total Km2: | 2,427.894 |
| Population As Of: | 2020 [2] |
| Population Total: | 34,877 |
| Population Density Km2: | auto |
| Timezone: | BRT |
| Utc Offset: | -3 |
| Website: | São Raimundo Nonato |
São Raimundo Nonato is a city located in the southern region of the state of the Piauí, Brazil, and is 576 km away from the capital, Teresina. It is known as the city where the administration (and part of) the Serra da Capivara National Park is located.
The city is served by Serra da Capivara Airport.
The municipality is in the Capivara-Confusões Ecological Corridor, created in 2006 to link the Serra da Capivara National Park to the Serra das Confusões National Park.