- January 12: Asimo Lidoriki-Goura, widow of Yiannis Gouras and commander of the Acropolis defence, is killed when a Turkish bomb brings down the roof of the Erechtheum.
- January 17: Georgios Karaiskakis defeats the Turkish army at Distomo possibly saving the Greek Revolution from being extinguished in Rumeli.
- January 30: Greek forces, under Ioannis Makriyiannis, repel Turkish attacks at Kastella, Piraeus.
- March 3: Georgios Karaiskakis defeats the Turkish army at Keratsini, Piraeus.
- March 21: Greek forces, under Georgios Karaiskakis and Turkish forces, under Kutahye, battle to a stalemate at Dafni.
- March 30: The Third National Assembly elects Ioannis Kapodistrias as governor of Greece.
- April 15: Richard Church is made commander of the Greek revolutionary forces.
- April 23: Georgios Karaiskakis is killed during a skirmish at Neo Faliro.
- May 5: The Third National Assembly ends its work at Troezen.
- May 24: The Greek garrison at the Acropolis, Athens surrenders to the Turks of Kutahye.
- December 21: The decree by which Ioannis Kapodistrias establishes a Military Academy in Nafplion is published.