Russell Allen (born July 19, 1971) is a singer and lyricist best known as the vocalist of American progressive metal band Symphony X. He has also worked with supergroups Star One, Allen-Lande, Level 10, and as one of fourteen vocalists in the progressive symphonic metal band Trans-Siberian Orchestra. Since 2011, he has served as the frontman of the heavy metal band Adrenaline Mob.