"Doctor" is a song recorded by Belgian singer Loïc Nottet, released on 30 October 2017 by Sony Music Entertainment as the lead single from his second studio album Sillygomania.

Released to celebrate Halloween, "Doctor" has been described as a hip hop-influenced dark pop song featuring bass synthesizers and bells in its instrumentation.

Selected music critics gave positive reviews of "Doctor" upon its release, praising its unicity, production and Nottet's vocal delivery.

Directed by Leander Hanssen Jr, it features Nottet as an evil clown walking on the streets of a town at night alongside a woman; they commit several offences to fellow people.

[9] Through Nottet's vocal delivery on "Doctor", he portrays a character descending into madness; during the song's final bridge, he "creepily chuckles to himself over his insanity in a perfectly timed accent".

Jonathan Currinn of website CelebMix praised the song's unicity and Nottet's vocal delivery, and compared it to material featured on his debut studio album Selfocracy (2017).

[11] An accompanying music video for "Doctor" was uploaded onto Nottet's official YouTube channel on 30 October 2017,[12] preceded by several teasers posted on the singer's social media.

[2] During the music video, Nottet is taking away candy from children, frightening an old couple, playing pranks on people, tricycling, and showing a "split personality with who we presume is his love interest".