2025 Challenger Ciudad de Guayaquil – Singles
| Singles | |
|---|---|
| 2025 Challenger Ciudad de Guayaquil | |
| Champion | Daniel Vallejo |
| Runner-up | Juan Pablo Varillas |
| Score | 7–5, 6–7(7–9), 6–3 |
Federico Agustín Gómez was the defending champion but lost in the semifinals to Juan Pablo Varillas.
Daniel Vallejo won the title after defeating Varillas 7–5, 6–7(7–9), 6–3 in the final.