The band released a video on their official YouTube channel Monday that announces their intent to reunite.
O-Town first came to fame in 2000 when they starred in the first season of MTV's Making the Band. The five final members of the band were Jacob Underwood, Erik-Michael Estrada, Trevor Penick, Dan Miller and Ashley Parker Angel. All but Angel will return for the reunion.
"This time is different, clearly for one reason -- there is only us," the boys say in the video. "There's no big manager. There's no big label... It's just us and our love for music."
"It's now or never," O-Town says.
Rumors say the band has signed a record deal and will release a new album sometime in 2014. O-Town released their second and last album, O2, in November 2002.
2014: The Year in Fashion [PHOTOS]
Polly Bergen, Emmy Award-winning actress, dies