I/O is the tenth studio album by 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 in over 21 years since Up (2002), marking the longest gap between two studio albums in his solo 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 both mixes each clocking in at over 68 minutes and the total project lasting over two hours. An additional "In-Side Mix" of the album is available on versions which include the Blu-ray audio disc.

Up is the seventh studio and thirteenth album overall by the English rock musician Peter Gabriel, released on 23 September 2002 through Geffen and Real World Records. The album rose to number 9 in the US, number 11 in the UK, and captured the number 1 position in Italy. Most critics reviewed it positively, though Rolling Stone said Gabriel was "out of touch". This would be Gabriel's last studio album of new original material for 21 years until the release of I/O (2023), although he did release several studio projects in the interim.