| Lujerdiu | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Cluj County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Tiocu de Sus, Cornești, Lujerdiu |
| Length: | 26km (16miles) |
| Mouth: | Someșul Mic |
| Mouth Location: | Fundătura |
| Mouth Coordinates: | 46.9643°N 23.8077°W |
| Basin Size: | 77km2 |
The Lujerdiu is a left tributary of the river Someșul Mic in Romania. It discharges into the Someșul Mic in Fundătura.[1] Its length is 26km (16miles) and its basin size is 77km2.