| Sergei Georgievich | |
|---|---|
 Sergei Georgievich, c. 1917 | |
| Duke of Leuchtenberg | |
| Reign | 26 September 1942 – 7 January 1974 |
| Predecessor | Alexander Georgievich, 7th Duke of Leuchtenberg |
| Born | 4 July 1890 Peterhof, Russian Empire |
| Died | 7 January 1974 (aged 83) Rome, Italy |
| House | Beauharnais |
| Father | George Maximilianovich, 6th Duke of Leuchtenberg |
| Mother | Princess Anastasia of Montenegro |
Prince Sergei Georgievich Romanowsky, 8th Duke of Leuchtenberg (4 July 1890 – 7 January 1974), was the son of Prince George Maximilianovich Romanowsky, 6th Duke of Leuchtenberg, and his second wife Princess Anastasia of Montenegro. He succeeded his half-brother Alexander Georgievich as Duke of Leuchtenberg in 1942 and held the title until his death in 1974.