Uno may refer to:

• Uno (surname)
• Uno (given name)

¡Uno! is the ninth studio album by the American punk rock band Green Day, released on September 21, 2012, by Reprise Records. It is the first of three albums in the ¡Uno!, ¡Dos!, ¡Tré! trilogy, a series of studio albums released from September 2012 to December 2012. Green Day recorded the album from February to June 2012 at Jingletown Studios in Oakland, California. It is the band's first album as a quartet, as Jason White became an official member.