Petrovsky Island (Russian: Петро́вский о́стров) is an island in St. Petersburg, Russia, bordered by the Malaya Neva, Malaya Nevka, and Zhdanovka Rivers (in the delta of the Neva River).

The island was called Stolbovy or Pattisaari in the early 18th century.

It belonged to Tsar Peter the Great in 1710 (hence the name) with two amusement houses built for him.

The island was built up with industrial enterprises from the second half of the 19th century such as Novaya Bavaria Brewery, rope works, and curtain and lace manufacturing.

St. Petersburg River Yacht Club, established in 1860, is situated in the western spit of the island.