| Săuca | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Satu Mare County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Săuca |
| Length: | 11km (07miles) |
| Mouth: | Santău |
| Mouth Location: | Upstream of Sudurău |
| Mouth Coordinates: | 47.5217°N 22.4599°W |
| Progression: | Santău→ |
| Basin Size: | 34km2 |
| Custom Label: | River code |
| Custom Data: | III.1.44.33.28.3.4 |
The Săuca is a left tributary of the river Santău in Romania. It flows into the Santău near Sudurău. Its length is 11km (07miles) and its basin size is 34km2.