| Sânmiclăuș | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Satu Mare County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Sânmiclăuș, Tiream, Vezendiu |
| Length: | 12km (07miles) |
| Mouth: | Ier |
| Mouth Coordinates: | 47.5458°N 22.4477°W |
| Basin Size: | 81km2 |
| Tributaries Right: | Vetijgat |
| Custom Label: | River code |
| Custom Data: | III.1.44.33.28.2 |
The Sânmiclăuș is a right tributary of the river Ier in Romania. It flows into the Ier near Sudurău. Its length is 12km (07miles) and its basin size is 81km2.