Zay River
 The Zay (Russian: Зай; Tatar Cyrillic: Зәй Latin: Zäy pronounced [zæɪ]) is a river in Tatarstan Russian Federation a left-bank tributary of the Kama River. Its length is 270 km and its drainage basin is 5020 km². It origins near Mikhaylovka Leninogorsky District Tatarstan and falls to the Kama River 7 km south-west of Nizhnekamsk.At its headstream the river is named the Steppe Zay (Russian: Степной Зай Stepnoy Zay Tatar Cyrillic: Дала Зәе Latin: Dala Zäye).