Alexander Romanov may refer to:
- Alexander I of Russia (1777–1825), also known as Alexander the Blessed
- Alexander II of Russia (1818–1881), aka Alexander the Liberator
- Alexander III of Russia (1845–1894)
- Alexander Romanov (ice hockey) (born 1980), Russian ice hockey player in the Kontinental Hockey League
- Grand Duke Alexander Alexandrovich of Russia (1869–1870), infant son of Alexander III
- Grand Duke Alexander Mikhailovich of Russia (1866–1933), dynast of the Russian Empire, naval officer, author, explorer & brother-in-law of Emperor Nicholas II
- Grand Duke Alexander Vladimirovich of Russia
- Prince Alexander Romanov (1929–2002), Russian prince and descendant of the Imperial Family
- Aleksandr Gennadyevich Romanov (born 1990), Russian football player
- Aleksandr Yuryevich Romanov (born 1992), Russian football player