Uruk For the Uruk culture or time period , see Uruk period. For the fictional creatures from J. R. R. Tolkien's writings, see Uruk-hai. For terrain on Ganymede, see Uruk Sulcus. Uruk (Sumerian: URUUNUG 𒌷�𒀔�, Biblical: Erech, Greek: Ορχόη or Ωρύγεια, Arabic وركاء Wa..