| Carlos Alberto Arroyo del Río | |
| Order: | 26th |
| Office: | President of Ecuador |
| Term Start: | 1 September 1940 |
| Term End: | 28 May 1944 |
| Predecessor: | Julio Enrique Moreno |
| Successor: | José María Velasco Ibarra |
| Office2: | Acting President of Ecuador |
| Term Start2: | 18 November 1939 |
| Term End2: | 10 December 1939 |
| Predecessor2: | Aurelio Mosquera |
| Successor2: | Andrés Córdova |
| Birth Date: | 27 November 1893 |
| Birth Place: | Guayaquil, Ecuador |
| Death Place: | Quito, Ecuador |
| Party: | Radical Liberal |
| Children: | 2 |
| Alma Mater: | University of Guayaquil |
Carlos Alberto Arroyo del Río (27 November 1893 – 31 October 1969) was President of Ecuador from 1940 to 1944.[1] He was a member of the Ecuadorian Radical Liberal Party. During his term, the country lost the 1941 Ecuadorian–Peruvian War.
Arroyo was President of the Chamber of Deputies from 1922 to 1923, and President of the Senate in 1935 and from February 1939 to August 1940.