| Vatsimanyoki | |
| Name Other: | Vaatsimenjoki |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Subdivision Type3: | Region |
| Subdivision Name3: | Murmansk Oblast |
| Length: | 50km (30miles) |
| Mouth: | Tuntsayoki |
| Mouth Coordinates: | 67.2225°N 29.9681°W |
| Progression: | Tuntsayoki→ |
| Basin Size: | 547km2 |
The Vatsimanyoki (Russian: Ватсиманйоки, Finnish: Vaatsimenjoki) is a river in the south of the Murmansk Oblast, Russia. It is long, and has a drainage basin of . The Vatsimanyoki flows into the Tuntsayoki.