| Măgheruș | |
| Name Other: | Aluniș |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Harghita County |
| Subdivision Type3: | Towns |
| Subdivision Name3: | Toplița |
| Length: | 12km (07miles) |
| Mouth: | Mureș |
| Mouth Location: | Toplița |
| Mouth Coordinates: | 46.923°N 25.348°W |
| Basin Size: | 29km2 |
The Măgheruș (also: Aluniș, Hungarian: Magyarós-patak) is a small river in the Gurghiu Mountains, Harghita County, central Romania. It is a left tributary of the river Mureș. It flows through the municipality Toplița, and joins the Mureș in the village Măgheruș (part of Toplița),[1] where it is channelized. Its length is 12km (07miles) and its basin size is 29km2. Its name is from the Hungarian "mogyoró", and means "Nutty Creek".