| Râșca | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Cluj County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Râșca |
| Length: | 20km (10miles) |
| Source1: | Gilău Mountains |
| Mouth: | Someșul Cald |
| Mouth Location: | Lake Tarnița |
| Mouth Coordinates: | 46.7182°N 23.268°W |
| Basin Size: | 59km2 |
The Râșca is a left tributary of the river Someșul Cald in Romania. It discharges into the Lake Tarnița, which is drained by the Someșul Cald. Its length is 20km (10miles) and its basin size is 59km2.