The Greek Archaeological Service (Greek: Αρχαιολογική Υπηρεσία, romanised: Archaiologikí Ypiresía) is a state service, under the auspices of the Greek Ministry of Culture, responsible for the oversight of all archaeological excavations, museums and the country's archaeological heritage in general.
The Greek Archaeological Service is the oldest such institution in Europe: it was founded in 1833, on the back of state efforts to regulate antiquities that had been ongoing since at least 1825, and given its legal basis in 1834. Its officers were known as "ephors" for most of its history, and have included some of Greece's foremost archaeologists, including Christos Tsountas, Valerios Stais, and Semni Karouzou. Its directors, originally under the title of "Ephor General", have included Kyriakos Pittakis, Panagiotis Kavvadias and Spyridon Marinatos, and have been influential both in the excavation and conservation of Greek antiquities and in the shaping of archaeological law.