Alexander Ypsilantis
| Alexandros Ypsilantis | |
|---|---|
| Native name | |
| Born | 12 December 1792 Constantinople, Ottoman Empire (now Istanbul, Turkey) | 
| Died | 31 January 1828 (aged 35) Vienna, Austrian Empire | 
| Buried | Taxiarches Church, Pedion tou Areos | 
| Allegiance | Russian Empire First Hellenic Republic | 
| Branch | Imperial Russian Army  Filiki Etaireia | 
| Years of service | 1805–1821 | 
| Rank | Major General (Imperial Russian Army) | 
| Unit | Grodno Hussar Regiment | 
| Commands | Commander of the 1st Brigade of Hussars (1st Hussar Division) Leader of the Filiki Etaireia Leader of the Sacred Band | 
| Battles / wars | |
| Relations | Alexandros Ypsilantis (grandfather) Konstantinos Ypsilantis (father) Demetrios Ypsilantis (brother) | 
| Other work | Aide-de-camp of Tsar Alexander I | 
| Signature | |
Alexandros Ypsilantis (12 December 1792 – 31 January 1828) was a Greek nationalist politician who was member of a prominent Phanariot Greek family, a prince of the Danubian Principalities, a senior officer of the Imperial Russian cavalry during the Napoleonic Wars, and a leader of the Filiki Etaireia, a secret organization that coordinated the beginning of the Greek War of Independence against the Ottoman Empire.