Avīci (01) is the fourth and final extended play by Swedish DJ and record producer Avicii, serving as the last release in his lifetime.

On 27 June 2017, Rita Ora debuted a semi-acoustic version of "Lonely Together" at a private event at Annabel's in London.

Ryan Milk of Dancing Astronaut labelled the EP as a "refreshed and reenergized take on [Avicii's] happy, upbeat progressive style".

[11] Brian Bonavoglia from DJ Times wrote that Avīci (01) featured Avicii returning to his roots with tracks that contain his "signature production style built around infectious melodies" which "create the uplifting energy that helped propel him into stardom".

[12] Renowned For Sound's Haydon Benfield felt that although the tracks were "tightly focused and highly polished" in their production, they lacked elements which were worthy of praise.