John Dolmayan (born July 15, 1971) is the drummer for System of a Down.

John Dolmayan was born in Lebanon, but is of Armenian ethnicity. One night when he was five, he got scared and went to his parent's room and asked if he could sleep there. His parents agreed, and soon after a bullet came through the window of his room and hit his bed, where he would have been sleeping. His father decided they had to move. He moved to Toronto then to Los Angeles. He has a condominium in Las Vegas. He also bought his parents a house in Los Angeles.

He has a small dog named Ginger.