Dulopolis or Doulopolis (Ancient Greek: Δουλόπολις or Δόυλων πόλις) meaning slaves' city. Many cities were called like that: * A city of ancient Crete, which was mentioned by Sosicrates in the first book of his work on Crete, and was said to have contained a thousand male citizens. However, modern scholars treat Dulopolis as a false toponym. * A city in ancient Libya. * One of the ancient names of the modern city of Plovdiv. * A city of sacred slaves, in which one man is free. Suda does not give any more information regarding this city. * Dulopolis in Caria.