John Dolmayan (Armenian: Ճոն Տոլմայեան; born July 15, 1973) is an Armenian-Lebanese-American drummer and songwriter. He is best known as the drummer of System of a Down. Dolmayan is also the drummer for the band Indicator and former drummer for Scars on Broadway. Dolmayan ranked number 33 on Loudwire list of Top 200 Hard Rock + Metal Drummers of All Time.