| Frasin | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Iași County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Roșcani, Rădeni, Probota, Cârniceni |
| Length: | 25km (16miles) |
| Mouth: | Jijia |
| Mouth Coordinates: | 47.3157°N 27.5154°W |
| Basin Size: | 66km2 |
| Tributaries Right: | Optoceni |
| Custom Label: | River code |
| Custom Data: | XII.1.15.31 |
The Frasin is a left tributary of the river Jijia in Romania. It flows into the Jijia near Cârniceni.[1] Its length is 25km (16miles) and its basin size is 66km2.