| Aichilik River | |
| Map Size: | 300 |
| Pushpin Map: | USA Alaska |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the mouth of the Aichilik River in Alaska |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Alaska |
| Subdivision Type4: | Borough |
| Subdivision Name4: | North Slope |
| Source1 Location: | Brooks Range |
| Source1 Coordinates: | 69.0214°N -143.3256°W[1] |
| Source1 Elevation: | 1867feet[2] |
| Mouth Location: | Beaufort Sea |
| Mouth Coordinates: | 69.84°N -141.1261°W |
| Mouth Elevation: | 0feet |
The Aichilik River is a river that flows through parts of North Slope Borough in the U.S. state of Alaska.[1] it originates on the northern flank of the Brooks Range and flows north, then northwest to empty into the Beaufort Sea northwest of Demarcation Point.
Its Inuit name, Aichillik was referenced by Ernest de Koven Leffingwell in 1918.