| Avtatkuul | |
| Mouth: | Bering Sea |
| Mouth Location: | Gulf of Anadyr |
| Mouth Coordinates: | 64.1858°N 178.1669°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Length: | 197km (122miles) |
| Basin Size: | 1290km2 |
The Avtatkuul (Russian: Автаткууль)[1] is a stream in Far East Russia. It is long, and has a drainage basin of . It flows through the Nizhneanadyrskaya lowlands, a region of wetlands, small lakes and tundra into the Bering Sea at the Anadyr Bay.
The Avtatkuul and its tributaries belong to the Chukotka Autonomous Okrug administrative region of Russia. The Avtatkuul wetlands surrounding the river are a Wildlife Refuge.