| Târnauca | |
| Pushpin Map: | Romania#Ukraine Chernivtsi Oblast |
| Subdivision Type1: | Country |
| Subdivision Name1: | Ukraine, Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Suceava County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Frătăuții Noi |
| Mouth: | Suceava |
| Mouth Location: | Costișa |
| Mouth Coordinates: | 47.9177°N 25.8988°W |
The Târnauca is a left tributary of the river Suceava. Its source is located near the village Bila Krynytsia in Ukraine. The river then crosses the border into Romania, joining the Suceava near the village of Costișa.[1] In Romania, its length is 6km (04miles) and its basin size is 13km2.