El Frontón
| Ruins of the former San Juan Bautista prison. | |
| Geography | |
| Location | Pacific Ocean | 
| Coordinates | 12°07′00″S 77°10′54″W / 12.11667°S 77.18167°W | 
| Area | 1 km2 (0.39 sq mi) | 
| Administration | |
| Region | Callao | 
| Additional information | |
| Time zone | |
El Frontón is a deserted island and former penal colony off the coast of Callao, Peru.