Stephen Percy Harris (born 12 March 1956) is an English musician who is the bassist, keyboardist, backing vocalist, primary songwriter and founder/leader of heavy metal band Iron Maiden. He has been the band's only constant member since their inception in 1975 and one of only two to have appeared on all of their albums, the other being guitarist Dave Murray.
Harris has a recognisable and popular style of bass playing, particularly the "gallop" which can be found on several Iron Maiden recordings, such as the singles "Run to the Hills" and "The Trooper". In addition to his role as the band's bass player, writer and backing vocalist, he has undertaken many other roles for the group, such as producing and co-producing their albums, directing and editing their live videos and performing studio keyboards and synthesizers. He has been cited as one of the greatest heavy metal bassists.
In 2012, Harris released his debut solo album, British Lion, which was followed by The Burning in 2020.