Aidan Baker (born 1974/75) is a musician from Toronto, Ontario, Canada who has released numerous records both as a solo artist and as part of various side projects, including Nadja, ARC, Caudal and Mnemosyne. He has also written several books of poetry.

He has toured around the world, and has made appearances at the Unsound Festival, MUTEK, and South by Southwest. He is married to Nadja bandmate, Leah Buckareff.