The Kizlyar Bay (Russian: Кизлярский залив) is a bay of the Caspian Sea that cuts 20 km deep into the Republic of Dagestan. The bay is 40 km wide and has a maximum depth of 4 meters. The Tyuleniy Island lies near the entrance to the bay.
|Coordinates: 44°34′30″N 46°59′58″E|
The Kuma, Prorva and Talovka rivers discharge into the bay, reducing the salinity to 5 PPT. The Dagestan Nature Reserve covers the entire area of the gulf, including the island of Morskoy Biryuchok. The hinterland is a low and marshy area of wetlands.