| Agăș | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Bacău County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Agăș |
| Length: | 9km (06miles) |
| Source1: | Tarcău Mountains |
| Mouth: | Trotuș |
| Mouth Coordinates: | 46.4844°N 26.2167°W |
| Basin Size: | 16km2 |
The Agăș (hu|Ágas) is a left tributary of the river Trotuș in Romania. It flows into the Trotuș in the village Agăș.[1] Its length is 9km (06miles) and its basin size is 16km2. The Agăș is the source of the water supply system of the village of Agăș.