At least two ships of the Imperial Russian Navy have been named Oleg.
- Russian frigate Oleg - a 51-gun, wooden frigate accidentally rammed and sunk by the Russian ironclad Kreml in 1869.
- Russian cruiser Oleg - a Bogatyr-class protected cruiser that participated in the Russo-Japanese War and World War I. Sunk by a British motor torpedo boat in 1919 and subsequently scrapped.
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.