In Greek myth, the Athenian who built the labyrinth of the minotaur (8)
I believe the answer is:
daedalus
(Other definitions for daedalus that I've seen before include "Strangely lauded as mythical creator of a labyrinth" , "Greek builder of Labyrinth and father of Icarus" , "In Greek myth, the Athenian who built the labyrinth at Minos" , "Greek artist" , "Mythical inventor, father to Icarus" .)