Sitia or Siteia is a port town and a municipality in Lasithi, Crete, Greece. The town has 11,166 inhabitants and the municipality has 20,438. It lies east of Agios Nikolaos and northeast of Ierapetra. Sitia's port is on the Sea of Crete, part of the Aegean Sea and is one of the economic centers of the Lasithi region. European route E75 starts in Sitia. The town is served by the Sitia Public Airport.