Velikiy Knyaz Konstantin () or Grand Duke Constantine may refer to:

  • One of several Russian Grand Dukes of the Royal House of Romanov, see Konstantin Romanov (disambiguation)
  • Fort Grand Duke Constantine (Russia), a fort defending Kronstadt, Russia

Ships

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  • Russian tender Veliky Knyaz Konstantin, a torpedo boat tender of the Russian Navy launched in 1857
  • Velikiy Knyaz Konstantin, a 120-gun ship of the line of the Russian Black Sea Fleet, launched 1852, which participated in the Battle of Sinop