| Mermezeu River | |
| Nyírmező-patak | |
| River | |
| Countries | Romania |
|---|---|
| Region | Transylvania |
| Counties | Mureş County |
| Mouth | Mureş |
| - location | Ciobotani |
The Mermezeu River ( Hungarian: Nyírmező-patak ) is a tributary of the Mureş River in Transylvania, Romania. Its name originates from the Hungarian language and means “Birchfield Creek”.