| Dimitrios Ypsilantis | |
| Native Name: | |
| Birth Date: | 1793 |
| Allegiance: | Russian Empire First Hellenic Republic |
| Branch: | Imperial Russian Army Filiki Etaireia Greek Revolutionary Army Hellenic Army |
| Commands: | General of the First Hellenic Republic |
| Birth Place: | Constantinople, Ottoman Empire (now Istanbul, Turkey) |
| Death Place: | Nafplion, First Hellenic Republic |
| Serviceyears: | 1814–1832 |
| Relations: | Alexandros Ypsilantis (grandfather) Constantine Ypsilantis (father) Alexandros Ypsilantis (brother) Manto Mavrogenous (mistress) |
| Battles: | |
| Signature: | Demetrios Ypsilantis signature.svg |
Demetrios Ypsilantis (alternatively spelled Demetrius Ypsilanti; Greek, Modern (1453-);: Δημήτριος Υψηλάντης, in Greek, Modern (1453-); pronounced as /ðiˈmitri.os ipsiˈla(n)dis/; Romanian; Moldavian; Moldovan: Dumitru Ipsilanti, Russian: Дмитрий Константинович Ипсиланти|Dmitriy Konstantinovich Ipsilanti; 179316 August 1832) was a Greek army officer who served in both the Hellenic Army and the Imperial Russian Army. Ypsilantis played an important role in the Greek War of Independence, leading several key battles. He was also member of the Filiki Eteria and the younger brother of Alexander Ypsilantis.
A member of Phanariote noble Ypsilantis family, he was the second son of Prince Constantine Ypsilantis of Moldavia. He was sent to France where he was educated at a French military school.
He distinguished himself as a Russian officer in the campaign of 1814.
In 1821 he took part in the Wallachian uprising under the leadership of his brother Alexandros, that indirectly benefited the Principalities of Moldavia and Wallachia.[1]
After the failure of the uprising in Wallachia, he went to the Morea (Peloponessus), where the Greek War of Independence had just broken out, as representative of Filiki Etaireia and his brother.
He was one of the most conspicuous of the Phanariote leaders during the early stages of the revolt, though he was much hampered by the local chiefs and by the civilian element headed by Alexandros Mavrokordatos; as a result the organisation of a regular army was slowed and operations were limited.[2] He took part in the sieges of Tripolitsa, Nafplion and the Battle of Dervenakia, securing the Greek dominion in Morea.
On 15 January 1822, he was elected president of the legislative assembly. However, due to the failure of his campaign in central Greece, and his failure to obtain a commanding position in the national convention of Astros, he was compelled to retire in 1823. After the landing of Ibrahim at Morea, he took part in the defence of Naplion in the Battle of the Lerna Mills.
In 1828, he was appointed in the new established regular army by Ioannis Kapodistrias as commander of the troops in eastern Greece. On 25 September 1829, he successfully compelled Aslan Bey to capitulate at the Pass of Petra (Battle of Petra), thus ending the active operations of the war.
He was known for an affair with Manto Mavrogenous, who was a Greek heroine of the Greek War of Independence.
He died due to illness in Nafplion on 16 August 1832.