| Nadăș | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Arad County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Nadăș |
| Mouth: | Cigher |
| Mouth Coordinates: | 46.2495°N 21.9506°W |
The Nadăș (hu|Nádas) is a left tributary of the river Cigher in Romania. It flows into the Cigher near the village Nadăș. Its length is 13km (08miles) and its basin size is 27km2.
The name in Hungarian means "reedy". The Romanian name derives from that.