"Fez – Being Born" is a song by Irish rock band U2 and the eighth track on their 2009 album No Line on the Horizon. It was planned for the track to open the album, but "No Line on the Horizon" was chosen instead. The song had several different titles during the recording sessions, including "Chromium Chords" and "Tripoli", and was the result of a fusion of two different songs during the recording sessions.

"Fez – Being Born" was first developed in the No Line on the Horizon recording sessions with producer Rick Rubin in 2006. The symphonic guitar sound from the experimental "Fez" piece, the opening minute of the song, was created by guitarist the Edge during the recording of "The Saints Are Coming" with Green Day. When the band decided to work with producers Brian Eno and Daniel Lanois, most of the material from the Rick Rubin sessions was shelved. Lanois found the part and edited it into a tempo, adding in one of the beats developed by Eno before playing it for the band. After hearing the piece, Bono noted that "it was almost something coming to life. Like a flower opening or coming into the world."

Another song, "Being Born", was being worked on concurrently. The guitar in this was developed through a Death by Audio distortion box; the idea to use it was suggested to the Edge by Ben Curtis of the Secret Machines. Lanois suspected that the slow-tempo "Fez" would work well alongside the more energetic "Being Born". He edited "Being Born" so that it would be in the same key as "Fez" and placed the two together, creating the one song. At this time it was provisionally titled "Chromium Chords", and it was later renamed "Tripoli" before the band changed the name again to "Fez – Being Born". The "let me in the sound" chant from the song "Get on Your Boots" was edited into the "Fez" section at a low volume, serving as the song's opening lyric. By June 2008, the song was almost finished.

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