[[Berkas:Traitor Video Musik.jpg|jmpl|Olivia Rodrigo di Truk (di Video Musik "traitor")]]
Sebuah video musik untuk "Traitor", disutradarai oleh Olivia Bee, dirilis pada 21 Oktober 2021. <ref>{{Cite web|last=Martoccio|first=Angie|last2=Martoccio|first2=Angie|date=2021-10-21|title=Olivia Rodrigo Takes a Swim, Thinks You're Still a 'Traitor' in New Video|url=https://www.rollingstone.com/music/music-news/olivia-rodrigo-traitor-sour-video-1245593/|website=Rolling Stone|language=en-US|access-date=2022-07-06}}</ref> <ref>{{Cite web|last=Doria|first=Matt|date=October 22, 2021|title=Olivia Rodrigo mourns a backstabbing ex in new music video for 'Traitor'|url=https://www.nme.com/news/music/olivia-rodrigo-mourns-a-backstabbing-ex-in-new-film-clip-for-traitor-3076938|website=[[NME]]|access-date=October 26, 2021}}</ref> Dia mempromosikan video di Instagram dengan judul "surprise! traitor mv out now!" (kejutan! musik video traitor sudah rilis!)