John Thomas Nolan is an American musician best known as the guitarist and co-lead vocalist of Taking Back Sunday, and the former lead singer, pianist, and guitarist of Straylight Run.

Taking Back Sunday is an American rock band from Long Island, New York. The band was formed by guitarist Eddie Reyes and bassist Jesse Lacey in 1999. The band's members currently are Adam Lazzara, John Nolan, Shaun Cooper and Mark O'Connell (drums), accompanied by Nathan Cogan (guitar) for their live performances. The band's former members include Lacey, Reyes, bassist Matthew Rubano, and guitarist-vocalists Fred Mascherino and Matthew Fazzi.