I/O (stylised as i/o) is the tenth studio album by the English singer-songwriter and musician Peter Gabriel, released on 1 December 2023 through Real World Records. It is Gabriel's first album of new original material since Up (2002), marking the longest gap between studio albums in his career. I/O features 12 tracks, each with two different mixes labeled the "Bright-Side Mix" and "Dark-Side Mix". It is also Gabriel's longest studio album of original material, with the mixes clocking in at over 68 minutes each and the total project lasting over two hours. An additional "In-Side Mix" of the album (in surround sound/Dolby Atmos) appears on versions which include the Blu-ray audio disc.