"OK Computer OKNOTOK 1997 2017" is a special reissue of the 1997 album "OK Computer" by the English rock band Radiohead. Released in June 2017 to mark the album’s 20th anniversary, this edition followed the 2016 acquisition of Radiohead’s back catalogue by XL Recordings from EMI.
 
"OKNOTOK" features remastered versions of the original "OK Computer" album alongside its B-sides, as well as three previously unreleased tracks: "I Promise," "Man of War," and "Lift." The special edition also includes an art book with notes and a cassette tape featuring demos and session recordings from the era. Unlike earlier Radiohead reissues, which were released by EMI without the band’s involvement and lacked new content, "OKNOTOK" was curated by Radiohead themselves, offering a more personal and comprehensive look at the album’s legacy.
 
To promote "OKNOTOK", Radiohead launched a teaser campaign featuring posters and videos. Music videos for the three new tracks were released, and "I Promise" and "Man of War" were issued as singles. The reissue debuted at number two on the UK Albums Chart and was the best-selling album in UK independent record stores for a year. In the US, it reached number 23 on the Billboard 200. The release received critical acclaim, particularly for the quality of its bonus material and its curated presentation of the album’s history.