Taking Back Sunday is an American rock band from Amityville, NY, formed in 1999 by guitarist Eddie Reyes. Current members of the band are Adam Lazzara (lead vocals), John Nolan (lead guitar, back-up vocals), Eddie Reyes (rhythm guitar), Shaun Cooper (bass guitar) and Mark O'Connell (drums).

The band has released three studio albums with various past members Fred Mascherino (former lead guitarist and back-up vocalist), Matthew Rubano (former bassist), and Matthew Fazzi (former lead guitarist and back-up vocalist). The original Tell All Your Friends line-up reunited in 2010 and have released two studio albums: Taking Back Sunday and their most recent album Happiness Is.