Andy Milne (born January 30, 1969) is a Canadian jazz pianist, who records and performs both as a solo artist and as the leader of the ensemble Dapp Theory. He was born in Hamilton, Ontario, and raised in Kincardine and Toronto. One of ten siblings, he studied music at York University, where he was a student of Oscar Peterson.

In 1990 Milne graduated and received a grant from the Canada Council to study at the Banff Centre for the Fine Arts. He met saxophonist Steve Coleman and later joined Coleman's band, Five Elements. In 1998, Milne formed the band Cosmic Dapp Theory.

He has toured and recorded with Ravi Coltrane, Grégoire Maret, Sean Rickman, and Ralph Alessi.

His 2018 album The Seasons of Being won the Juno Award for Jazz Album of the Year – Group at the Juno Awards of 2019.