| Arenal del Sur | |
| Settlement Type: | Municipality and town |
| Pushpin Map: | Colombia |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Colombia |
| Subdivision Type: | Country |
| Subdivision Name: |  Colombia |
| Subdivision Type1: | Department |
| Subdivision Name1: | Bolívar Department |
| Area Total Km2: | 534 |
| Population As Of: | 2015 |
| Population Total: | 18876 |
| Population Urban: | 5173 |
| Coordinates: | 8.4667°N -130°W |
| Elevation M: | 65 |
| Blank Name: | Climate |
Arenal del Sur is a town and municipality located in the Bolívar Department, northern Colombia.