| Cerna | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Maramureș, Satu Mare |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Bicaz, Babța, Racova, Hurezu Mare |
| Mouth: | Crasna |
| Mouth Location: | Supuru de Jos |
| Mouth Coordinates: | 47.4715°N 22.8035°W |
| Tributaries Left: | Ciuta |
| Tributaries Right: | Nanda |
The Cerna is a right tributary of the river Crasna in Romania. It discharges into the Crasna near Supur. Its length is 18km (11miles) and its basin size is 112km2.