The First Kingdom of Greece is declared in the London Conference.

The London Conference of 1832 was an international conference convened to establish a stable government in Greece. Negotiations between the three Great Powers (Britain, France and Russia) resulted in the establishment of the Kingdom of Greece under a Bavarian Prince. The decisions were ratified in the Treaty of Constantinople later that year. The treaty followed the Akkerman Convention which had previously recognized another territorial change in the Balkans, the suzerainty of the Principality of Serbia.

The Kingdom of Greece (Greek: Βασίλειον τῆς Ἑλλάδος [vaˈsili.on tis eˈlaðos]) was established in 1832 and was the successor state to the First Hellenic Republic. It was internationally recognised by the Treaty of Constantinople, where Greece also secured its full independence from the Ottoman Empire after nearly four centuries.

The Kingdom of Greece was dissolved in 1924 and the Second Hellenic Republic was established following Greece's defeat by Turkey in the Asia Minor Campaign. A military coup d'état restored the monarchy in 1935 and Greece became a Kingdom again until 1973. The Kingdom was finally dissolved in the aftermath of a seven-year military dictatorship (1967–1974) and the Third Hellenic Republic was established following a referendum held in 1974.