| Ariari River | |
| Mouth Location: | 2.5787°N -72.7692°W |
| Subdivision Type1: | Country |
The Ariari River is a river of Colombia, located entirely within the Meta Department. Part of the Orinoco River basin, it merges with the Guayabero River to forms the Guaviare River, one of the principle tributaries of the Orinoco.