Lavreotiki is a municipality at the southeasternnmost tip of the Attica peninsula in the Greek regional unit of East Attica. Its municipal seat is the town of Laurium.
It is historically important as a significant ancient mining district, most notably in the villages of Laurium and Thorikos on the southeastern seaboard during the 6th, 5th, and 4th centuries BCE. As such it financed the wealth of Athens and the emergence of the Athenian Empire through the slave-powered mining efforts for silver and lead, beginning with the discovery of 2 deep-vein mining efforts during the 480's. Prior to that development, which at Themistocles urging in 483 BC led to the expansion of the Athenian fleet to 200 ships, only surface-mining was deployed as a technique for harvesting silver. More than 250 ore washeries have been identified by archaeologists and geologists in the district.