The Shoshma (, Šošma) is a river in Mari El, Tatarstan and Kirov Oblast, Russian Federation, a right-bank tributary of the Vyatka. Its length is 105 km, of which 90 km are in Tatarstan, and its drainage basin covers 1885 km2. 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 149 m3/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'". The localities of Baltasi and Malmyzh are located on the river.