| Assel | |
| Name Other: | Albayevka |
| Name Etymology: | Named after the Bashkir word for solonchak |
| Source1 Location: | Zianchurinsky District, Bashkortostan, Russia |
| Source1 Coordinates: | 52.0058°N 56.9939°W |
| Source1 Elevation: | 393m (1,289feet) |
| Mouth: | Bolshoy Ik |
| Mouth Location: | 14 km along the left bank |
| Mouth Coordinates: | 51.8933°N 56.5328°W |
| Mouth Elevation: | 142m (466feet) |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Subdivision Type2: | Region |
| Subdivision Name2: | Bashkortostan and Orenburg Oblast |
| Length: | 51km (32miles) |
| Basin Size: | 358km2 |
| River System: | Ural Basin |
| Pushpin Map: | Russia |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the river in Russia |
| Pushpin Map Alt: | Map showing the location of the river in Russia |
| Progression: | Bolshoy Ik→ Sakmara→ |
Assel (Russian: Ассель; Bashkir: Әселе, Äsele) is a river in Russia, that flows through Bashkortostan and the Orenburg Oblast. The river mouth is 14 km along the left bank of the Bolshoy Ik. The river is 51 km long and the catchment area is 358 km².
At 11 km from the mouth, the river Yuldybayevo flows into the left bank.
The name of the river came from the Bashkir language. The part эсе means "solonchak", and -ле is a word-formation affix.[1]
The other name of the river is Albayevka (Альбаевка).
According to the Russian State Water Register, the river belongs to the water management of the Bolshoy Ik in the Ural Watershed district.[2]
Code of the object in the State Water Register is 12010000612112200006368.[2]
The Asselian geochronologic age is named after the river.[3]