William of Lucca

William of Lucca (Guglielmo da Lucca) (died 1178 AD) was an Italian theologian and scholastic philosopher. He taught at Bologna, in the third quarter of the twelfth century.

He wrote a commentary on The Divine Names of Pseudo-Dionysius, combining ideas from Gilbert de la Porrée with those of Eriugena. He is also the presumed author of Summa artis dialectice, a textbook of logic, influenced by Abelard.