| Baicu | |
| Name Other: | Boicu |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Maramureș County |
| Length: | 19km (12miles) |
| Mouth: | Iza |
| Mouth Location: | Dragomirești |
| Mouth Coordinates: | 47.6804°N 24.2827°W |
| Basin Size: | 100km2 |
| Tributaries Right: | Călimaș, Idișor |
The Baicu or Boicu is a left tributary of the river Iza in Romania. It discharges into the Iza near Dragomirești.[1] Its length is 19km (12miles) and its basin size is 100km2.[2] Its main tributaries are the Călimaș and the Idișor.