"Who Do You Love" is a song by American DJ duo the Chainsmokers featuring Australian pop rock band 5 Seconds of Summer, released on February 7, 2019, through Sony Music.

[2] The song serves as the lead single from the Chainsmokers' third studio album World War Joy, alongside the scene of "Booksmart".

[3] In April 2021, an early demo of the song intended for Demi Lovato's 2017 album Tell Me You Love Me surfaced online.

[5] An audio clip was posted on February 5, featuring what edm.com called a "radio-friendly vocal harmony" by 5 Seconds of Summer.

In the bridge, 5 Seconds of Summer frontman Luke Hemmings crowd surfs, before the Chainsmokers member Andrew Taggart does the same, jumping from the stage roof.