The Tyuleniy Archipelago (Kazakh: Түлен аралдары Tülen araldary, Russian: Тюленьи острова), is an island group in the north-eastern Caspian Sea off the Mangyshlak Bay west of the Mangyshlak Peninsula and about 13 kilometres (8.1 miles) northwest of the Tupkaragan Peninsula, 27 kilometres (17 miles) north of Bautino.

In past centuries many Caspian seals come to the islands' shores, hence the name of the group.

The islands have been declared an Important Bird Area and a National Protected Zone (State Reservation).

There are large concentrations of seagulls and wetland birds, like coots, wild ducks, swans, egrets, and waders in the archipelago during their nesting period.

The Tyuleniy island group is also an important breeding ground for the Sandwich tern (Thalasseus sandvicensis).