Serj Tankian (Armenian: Սերժ Թանգեան; born August 21, 1967) is an Armenian-American singer–songwriter, composer, multi-instrumentalist, record producer, poet, and a political activist. He is best known as the lead vocalist, songwriter, keyboardist, and occasional live rhythm guitarist of the Grammy Award-winning rock band, System of a Down.
During his musical career, Tankian has released five albums with System of a Down, one with Arto Tunçboyacıyan (Serart), as well as two solo albums Elect the Dead and Imperfect Harmonies and a live orchestral version of the former incorporating the Auckland Philharmonia Orchestra named Elect the Dead Symphony. In 2002, Tankian and Rage Against the Machine/Audioslave guitarist Tom Morello co-founded a non-profit political activist organization, Axis of Justice. Tankian also founded the music label Serjical Strike Records.
Tankian is ranked 26th in the Hit Parader's Top 100 Metal Vocalist of All Time.