The Mani Peninsula, also long known by its medieval name Maina or Maïna, is a geographical and cultural region in the Peloponnese of Southern Greece and home to the Maniots, who claim descent from the ancient Spartans. The capital city of Mani is Areopoli. Mani is the central of three peninsulas which extend southwards from the Peloponnese. To the east is the Laconian Gulf, to the west the Messenian Gulf. The Mani peninsula forms a continuation of the Taygetos mountain range, the western spine of the Peloponnese.

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.