Konstantin Romanov

• Konstantin Romanov (ice hockey), Kazakh professional ice hockey player
• Grand Duke Constantine Pavlovich of Russia, second son of the Russian Emperor Paul I
• Grand Duke Konstantin Nikolayevich of Russia, second son of the Russian Emperor Nicholas I
• Grand Duke Konstantin Konstantinovich of Russia, second son of the above Grand Duke Constantine Nicolaievich
• Prince Constantine Constantinovich of Russia, son of the above ''Grand Duke Constantine Constantinovich''