| Lyapin | |
| Source1 Coordinates: | 64.2786°N 60.915°W |
| Mouth: | Severnaya Sosva |
| Mouth Coordinates: | 63.6242°N 61.8568°W |
| Progression: | Severnaya Sosva→ Malaya Ob→ |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Length: | 151km (94miles) |
| Basin Size: | 27300km2 |
The Lyapin (Russian: Ляпин; Mansi: Сакв-я̄, Sakv-jā) is a river in Khanty-Mansi Autonomous Okrug, Russia, a left tributary of the Severnaya Sosva. It is long, and has a drainage basin of .