Lambros Katsonis (Greek: Λάμπρος Κατσώνης; Russian: Ламброс Кацонис; 1752–1804) was a Greek revolutionary hero of the 18th century; he was also a knight of the Russian Empire and an officer with the rank of colonel in the Imperial Russian Army (or Navy), decorated with an Order of St. George, IV class medal.
Born in Levadia, he joined the Orlov Revolt in 1770, but not pleased by the result he built up a small fleet and began harassing the Ottomans in the Aegean Sea. In 1778 he assembled a Greek pirate fleet of seventy vessels, which harassed the Turkish squadrons in the Aegean and forced the Ottomans to abandon the island of Kastelorizo; the castle on the island was renamed to Lambros Katsonis Castle. In 1790 he was defeated at the Battle of Andros. Katsonis had his hideout in the bay of Porto Kagio. His crew grew very restless and they attacked and sunk two French naval ships. This caused the French to join with the Ottomans to try to stop Katsonis. They cornered him at Porto Kagio and Katsonis' navy was destroyed. Katsonis escaped to Odessa and Yalta where he was granted the Livadia estate —what was later to become the Livadia Palace estate— by Catherine the Great. He lived out the rest of his days there. His wife was known as Angelina in Russia, but her real name was Maria Sophianou. He had three sons and possibly one daughter. His first son was killed by the Turks when he was still infant, in the Greek island of Kea. The second, Lykourgos (known in Russia as Ликург Ламбрович Качиони, 1790-1863), born on a Greek island, had a brilliant career as officer in the Russian Army, including his service in the Greek Battalion of Balaklava. The third son, Alexander who was born in the Crimea, also became an officer in the Russian Army. According to some sources he had a daughter named Garyfallia, but there is no information about her life. One of Lambros' grandsons, Spyridon son of Alexander, was a known Russian writer. He was also the godfather of Odysseas Androutsos, a commander of the Greek War of Independence. He supposedly died in battle in Crimea at the hand of an Albanian captain of the Ottoman Empire.
The Livadia Palace, the summer home of the last Tsars was built on Katsonis' Livadia estate after 1861. The name of the estate was given to it by Katsonis, who named it after his birthplace; moreover, this is the origin of the name of Livadiya town itself. It is there that the World War II Yalta Conference took place.
- Panos Stamou (c. 2007). Προσέγγιση ιστορικής προσωπικότητας μέσα από Αρχειακές πηγές: Περίπτωση Λάμπρου Κατσώνη [Approaching the historic person through archival sources: The case of Lampros Katsonis] (DOC) (in Greek). Hellenic Cultural Center (Moscow). p. 6.
- Dakin, Douglas (1973). The Greek Struggle for Independence, 1821–1833. Berkeley: University of California Press. pp. 26–27. ISBN 0-520-02342-0.
- Pryakhin, Yuri D. (2004). Ламброс Кацонис в истории Греции и России [Lambros Katsonis in the history of Greece and Russia] (in Russian). St. Petersburg: Aletheia. ISBN 5-89329-731-8.
- Vakalopoulos, Apostolos (1975). "Η στροφή των Ελλήνων προς τους Ρώσους: Ο Ρωσοτουρκικός πόλεμος του 1787-1792 και οι Έλληνες. Οι αγώνες των Σουλιωτών και η δράση του Λάμπρου Κατσώνη" [The Greeks turn to the Russians: The Russo-Turkish War of 1787–1792 and the Greeks. The struggles of the Souliots and the actions of Lambros Katsonis]. Ιστορία του Ελληνικού Έθνους, Τόμος ΙΑ′: Ο ελληνισμός υπό ξένη κυριαρχία, 1669–1821 [History of the Greek Nation, Volume XI: Hellenism under foreign rule, 1669–1821] (in Greek). Athens: Ekdotiki Athinon. pp. 85–97.