Methoni, formerly Methone or Modon, is a village and a former municipality in Messenia, Peloponnese, Greece. Since the 2011 local government reform it is part of the municipality of Pylos-Nestor, of which it is a municipal unit. The municipal unit has an area of 97.202 km2. Its name may be derived from Mothona, a mythical rock. It is located 11 km south of Pylos and 11 km west of Foinikounta. The municipal unit of Methoni includes the nearby villages of Grizokampos, Finikouda, Foiniki, Lachanada, Varakes, Kainourgio Chorio, Kamaria, Evangelismos, and the Oinnoussai Islands. The islands are Sapientza, Schiza, and Santa Marina; they form a natural protection for Methoni harbour.

Messenia or Messinia is a regional unit in the southwestern part of the Peloponnese region, in Greece. Until the implementation of the Kallikratis plan on 1 January 2011, Messenia was a prefecture (nomos) covering the same territory. The capital and largest city of Messenia is Kalamata.