The Vorontsovskaya Cave System (Воронцовская система пещер) is a long chain of caves in the Khosta and Adler districts of Sochi, Russia.

It is part of a range of Mesozoic limestones that runs parallel to the Black Sea coast for 400 km.

It may be accessed through a dozen entrances dotting the slopes of the Kudepsta River valley, at heights ranging from 419 to 720 meters above sea level.

The Prometheus Grotto, with a length of over 120 meters, is developed as a tourist destination.

The cave takes its name from the nearest settlement, Vorontsovka.