XO Tour Llif3

"XO Tour Llif3" (stylized as "XO TOUR Llif3" and pronounced "XO Tour Life") is a song by American rapper Lil Uzi Vert from the EP Luv Is Rage 1.5 (2017) and debut album Luv Is Rage 2 (2017). It was released on SoundCloud on February 26, 2017, and later on all music streaming platforms on March 24, 2017. The track was written by Lil Uzi Vert and produced by TM88 and JW Lucas, who are also credited as co-writers. The song's title references the record label of the same name, founded by Canadian pop/R&B singer The Weeknd and the song was recorded while Lil Uzi Vert was embarking on tour with The Weeknd.

The song received widespread critical acclaim and peaked at number seven on the US Billboard Hot 100, becoming Lil Uzi Vert's highest-charting single as a solo artist until the release of "Futsal Shuffle 2020", which peaked at number five. It was also their second top 10 entry overall after their feature on "Bad and Boujee" by Migos. It is Lil Uzi Vert's most popular song, and has amassed over two billion streams on Spotify. On December 10, 2024, the song was certified RIAA Diamond selling over 14 million copies, giving them their first Diamond certification and making it one of the best-selling emo rap songs, and also one of the best-selling digital singles. A sequel to the song, titled "P2" was included on Lil Uzi Vert's second album Eternal Atake (2020). The song has since come to be regarded as Lil Uzi Vert's signature song.

It was later featured on the soundtrack for WWE 2K20.