Lucas Kilian (1579–1637), was a German engraver and member of the Kilian family of engravers in Augsburg.
He was the son of Bartholomaus Kilian the elder and Maria Pfeiffelmann. After his father's death in 1588 his mother remarried Dominicus Custos and he and his brother Wolfgang became his pupils. He is known for his engravings after Cornelis Cornelisz. van Haarlem.
He died in Augsburg.