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. It is 89 kilometres (55 mi) long, and its drainage basin covers 1,016 square kilometres (392 sq mi).