Alex de Grassi (born February 13, 1952) is an American fingerstyle guitarist. Tom Wheeler wrote in Guitar Player magazine that his technique is "the kind that shoves fellow pickers to the cliff of decision: should I practice like a madman or chuck it altogether?" De Grassi was invited by his cousin William Ackerman to join the Windham Hill label and became one of the label's best sellers.
De Grassi uses various guitars. Currently his primary touring/recording guitars are a custom Lowden F35c maple with a European spruce top and a custom Traugott R model Brazilian Rosewood with German spruce top. Other favorites are a custom Carlson sympitar (twelve sympathetic strings) maple with spruce top and a custom McCollum baritone (28" scale) paduk with Italian spruce top.