Regan Hagar is an American musician. Primarily a drummer, he also plays keyboard and guitar on occasion.
He was the drummer in Malfunkshun from 1980 to 1988, featuring Andrew Wood of Mother Love Bone on vocals and Kevin Wood on guitar. He had previously been in the band Maggot Brains, but joined Malfunkshun when their drummer, David Hunt, quit the band after the first show. Hagar has also performed in Satchel with Shawn Smith, and in Brad with Smith and Stone Gossard (from Pearl Jam and formerly Mother Love Bone).