The Kingdom of the Morea or Realm of the Morea was the official name the Republic of Venice gave to the Peloponnese peninsula in southern Greece when it was conquered from the Ottoman Empire during the Morean War in 1684–99. The Venetians tried, with considerable success, to repopulate the country and reinvigorate its agriculture and economy, but were unable to gain the allegiance of the bulk of the population, nor to secure their new possession militarily. As a result, it was lost again to the Ottomans in a brief campaign in June–September 1715.

The Peloponnese, Peloponnesus or Morea is a peninsula and geographic region in Southern Greece, and the southernmost region of the Balkans. It is connected to the central part of the country by the Isthmus of Corinth land bridge which separates the Gulf of Corinth from the Saronic Gulf. From the late Middle Ages until the 19th century, the peninsula was known as the Morea, a name still in colloquial use in its demotic form.