| Shoshma | |
| Map: | Схема бассейна реки Вятка.svg |
| Mouth Coordinates: | 56.5293°N 50.7495°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Mari El, Tatarstan and Kirov Oblast, Russia |
| Length: | 105km (65miles) |
| Basin Size: | 1885km2 |
The Shoshma (Russian: Шошма; Tatar: Шушма; Mari: Шошма, Šošma) is a river in Mari El, Tatarstan and Kirov Oblast, Russian Federation, a right-bank tributary of the Vyatka. Its length is 105km (65miles), of which 90km (60miles) are in Tatarstan, and its drainage basin covers 1885km2.[1] It originates near Maly Kiner, Mari El and flows to the Vyatka near Malmyzh, Kirov Oblast.
Major tributaries are the Sarda, Kushket, Arborka, and Kuguborka rivers. The maximal mineralization 500–800 mg/L. The maximal water discharge is 149m3/s (1980). Drainage is regulated. There are peat deposits in the river valley. Since 1978 it has been protected as a "natural monument of Tatarstan'". Baltasi and Malmyzh are along the river.