Olga Romanova may refer to:
- Grand Duchess Olga Nikolaevna of Russia (1895–1918), daughter of Nicholas II of Russia
- Grand Duchess Olga Alexandrovna of Russia (1882–1960), daughter of Alexander III of Russia
- Olga Romanova (athlete) (born 1980), Russian long distance runner
- Olga "Dark Princess" Romanova, former lead singer of the Gothic metal band Dark Princess
- Victim in the Moscow theater hostage crisis