The Evrotas or Eurotas is the main river of Laconia and one of the major rivers of the Peloponnese, in Greece. The river's springs are located just northwest of the border between Laconia and Arcadia, at Skortsinos. The river is also fed by underwater springs at Pellana and by tributaries coursing down from Mt. Taygetos and Mt. Parnon, which flank the Evrotas Valley to the west and east, respectively. The river is 82 kilometres (51 mi) long, flowing in a north-south direction and emptying into the Laconian Gulf. Its drainage basin is 2,239 km2 (864 sq mi).

Laconia or Lakonia is a historical and administrative region of Greece located on the southeastern part of the Peloponnese peninsula. Its administrative capital is Sparta. The word laconic—to speak in a blunt, concise way—is derived from the name of this region, a reference to the ancient Spartans who were renowned for their verbal austerity and blunt, often pithy remarks.