Odesza (; stylized as ODESZA) is an American electronic music duo originating from Bellingham, Washington. It consists of Harrison Mills and Clayton Knight, known individually as Catacombkid and BeachesBeaches. They formed in 2012, shortly before Mills and Knight graduated from Western Washington University.

Their debut album, Summer's Gone, was released later in 2012 to acclaim in the underground electronic music community. After their debut extended play (EP), My Friends Never Die, in 2013, they released their second album, In Return, on September 9, 2014. It was the duo's debut release on Ninja Tune and its imprint, Counter Records. In 2016, "Say My Name" (RAC mix) gained the duo their first Grammy nomination (Best Remixed Recording, Non-Classical) at the 58th Annual Grammy Awards. A Moment Apart, their third studio album, was released on September 8, 2017. It reached number three on the Billboard 200, while topping the Top Electronic/Dance Albums Chart. It was nominated for Best Dance/Electronic Album, with "Line of Sight" also nominated for Best Dance Recording, at the 60th Annual Grammy Awards in 2018. ODESZA released their fourth studio album, The Last Goodbye, on July 22, 2022 through Ninja Tune. The album was nominated for Best Dance/Electronic Album for the 65th Grammy Awards.

The duo was also nominated in 2017 for Producer of the Year at the Electronic Music Awards. They have founded and operated their own record label, Foreign Family Collective, which distributes songs as well as visual art from artists. Furthermore, Billboard named Odesza as number 10 on their 2018 ranking of dance musicians, the Billboard Dance 100.