| Félix Paiva | |
| Order: | 28th |
| Office: | President of Paraguay |
| Term Start: | 15 August 1937 |
| Term End: | 15 August 1939 |
| Predecessor: | Rafael Franco |
| Successor: | José Félix Estigarribia |
| Term Start1: | 29 October 1921 |
| Term End1: | 7 November 1921 |
| Predecessor1: | Manuel Gondra |
| Successor1: | Eusebio Ayala |
| Order2: | 15th |
| Office2: | Vice President of Paraguay |
| President2: | Manuel Gondra |
| Term Start2: | 15 August 1920 |
| Term End2: | 29 October 1921 |
| Predecessor2: | José Pedro Montero (1919) |
| Successor2: | Manuel Burgos (1924) |
| Birth Date: | 21 February 1877 |
| Birth Place: | Caazapá, Paraguay |
| Death Place: | Asunción, Paraguay |
| Party: | Liberal Party |
Félix Paiva (21 February 1877, Caazapá, Caazapá Department – 2 November 1965, Asunción) was a Paraguayan politician from the Liberal Party.
He studied law and worked as university teacher, dean of the National University of Asuncion and president of the Supreme Court. In his political career he was a minister in many occasions, Vice President of Paraguay between 1920 and 1921,[1] and also President of Paraguay from 15 August 1937 to 15 August 1939.
He became president after the overthrow of Rafael Franco. In his term he restored the Constitution of 1870. On 10 October 1938, the Congress of Paraguay confirmed Paiva as provisional president. He signed a peace agreement with Bolivia in 1938, which concluded the Chaco War.