Sybaris (Ancient Greek: Σύβαρις; Italian: Sibari) was an important ancient Greek city situated on the coast of the Gulf of Taranto in modern Calabria, Italy.
The city was founded around 720 BC by Achaean and Troezenian settlers. Ten years later, Achaeans founded the nearby great city of Kroton. Sybaris amassed great wealth thanks to its fertile land and busy port so that it was known as the wealthiest colony of the Greek Archaic world. Its inhabitants became famous among the Greeks for their hedonism, feasts, and excesses, to the extent that "sybarite" and "sybaritic" have become bywords for opulence, luxury, and outrageous pleasure-seeking. Sybaris ruled smaller colonies throughout the area, and had an acropolis at Timpone della Motta near Francavilla Marittima about 10 km distant.