Mantinea (Greek: Mαντινεία Mantineia, modern romanizations: Mantinia, Mandineia or Mandinia) is a city in Arcadia in the central Peloponnese that was the site of two significant battles in Classical Greek history.
The first battle of Mantinea, in 418 BC, was the largest land battle of the Peloponnesian War. On one side were Sparta and its remaining allies, and on the other were Athens, its allies, plus the cities that had revolted against the Spartans. The battle turned into a rout of the Athenian and allied armies, a result attributed to greater Spartan courage.
The second battle of Mantinea, in 362 BC, led to the fall of Theban hegemony. In that battle, Athens and Sparta were allied. Thebes won the battle, but its greatest general, Epaminondas, was killed in the fighting.
Modern-day Mantineia is the region around the city of Tripoli in the prefecture of Arcadia. It is also the name of a Protected designation of origin of Greek blanc de gris wine, made of the moschofilero grape traditionally grown in the region. The seat of Mantineia is Nestani, home to about one-fifth (20%) of the population. Mantineia is located about a few kilometres north of GR-33 and GR-77 which in 1999 changed the routes and links with the road to Tripoli instead of a junction with a right turn from Tripoli. It is also located west of the Tripoli-Corinth/Athens Superhighway (E65) and SE of Vytina.
The mountains surround the valley including the Lyrkeia mountains as well as the Mainalo mountains to the southwest. The valley contains potato and wheat farms as well as other crops throughout the municipality and covers about half of the municipality. Several floods ravaged Mantineia especially in the mid-20th century which a valley for a while became a lake. Forests dominate the mountain parts with traces in the valley areas. Rocks and grasslands covers most of the northeast.
The province of Mantineia (see Mantineia province) is a province that is named after the ancient city, the seat is located about 15 km south in Tripoli.
Division of the municipality, population 3510 (census 2001)
Coordinates: 22°23′30″N, 37°36′W″region:GR