Coordinates: 54°59′53″N 49°46′05″E / 54.998°N 49.768°E / 54.998; 49.768
The Aktay (Russian: Актай) or Aqtay (Tatar Cyrillic: Актай, Latin: Aqtay) is a river in Tatarstan, Russian Federation, a left-bank tributary of the Volga River, falling into the Kuybyshev Reservoir near Izmeri. Its length is 89 km and its drainage basin is 1,016 km².
Major tributaries are Chelninka, Salmanka, Romodanka. The maximal mineralization 500-700 mg/l. Average sediment in mouth per year is 71 mm. Drainage is regulated. In the upper stream use to dry.  Bazarnye Mataki stays on the river.