Alan Olav Walker (born 24 August 1997) is a Norwegian DJ and record producer. His songs "Faded", "Sing Me to Sleep", "Alone", "All Falls Down" (with Noah Cyrus and Digital Farm Animals) and "Darkside" (with Au/Ra and Tomine Harket) have each been multi-platinum-certified and reached number 1 on the VG-lista chart in Norway. Walker's music style is reminiscent of slightly slower-paced progressive house, 1990s trance music, or dubstep with a smoother rhythmic edge.

Walker grew up in Fana, Bergen, Norway, and began making music around 2012. Using feedback from fans online, he later gained recognition by posting several videos on YouTube and SoundCloud. Starting out as a bedroom producer, he was better known as DJ Walkzz before signing a record deal and releasing his debut single "Fade" on NoCopyrightSounds at the age of 17. In December 2015, his single "Faded," released on MER Musikk, reached as high as number 80 on the US Billboard Hot 100 and was certified triple platinum by the Recording Industry Association of America (RIAA). In 2016, after releasing the singles "Sing Me to Sleep" and "Alone". In 2017 released the single "The Spectre," a vocal remake of an early song, "Spectre," which reached the top 10 on the Norwegian, Swiss, and Polish charts. Walker was ranked 13th on the Billboard 21 Under 21, which was released in September of the same year. Then, in October of the same year, the band achieved similar success with the single "All Falls Down," a collaboration with singer Noah Cyrus and British DJ and music producer Digital Farm Animals.

In 2018, he released the song "Darkside" featuring Antiguan-German singer/songwriter Au/Ra and Norwegian singer Tomine Harket. A few months later, his first studio album, Different World (2018), debuted at number 1 on the Norwegian and Finnish charts, as well as in the Top 20 in Sweden and Switzerland. In 2019, Walker's music video "Diamond Heart" won the nominated for Best Cinematography at the Berlin Music Video Awards. In 2023, he ranked number 11 on DJ Mag's Top 100 DJs. Walker has accumulated a net worth estimated at $20 million by 2022.

In rating the most subscribed YouTube channels in Norway by vidIQ, Walker was the first in the list as of 2024 with about 45.7 million subscribers.