- Source: Russian ship Imperator Nikolai I
- Russian ship Imperator Nikolai I
- Russian battleship Imperator Nikolai I (1916)
- Russian battleship Imperator Nikolai I (1889)
- Russian ship of the line Imperator Nikolai I (1860)
- Imperator Aleksandr II-class battleship
- List of active Russian Navy ships
- List of battleships of Russia and the Soviet Union
- Japanese ship Iki
- List of Russian Fleet hospital ships
- Nikolai Nebogatov
At least 3 ships of the Imperial Russian Navy have been named Imperator Nikolai I after
the Tsar Nicholas I of Russia.
Russian ship of the line Imperator Nikolai I (1860) - 111-gun steam-powered ship of the line that served with the Baltic Fleet; stricken in 1874.
Russian battleship Imperator Nikolai I - Imperator Aleksandr II-class battleship captured during the Battle of Tsushima in 1905 by the Japanese and renamed Iki. Sunk as a target ship in 1915.
Russian battleship Imperator Nikolai I (1916) - Dreadnought whose construction at Nikolayev was interrupted by World War I and scrapped in 1927.