"Dim All the Lights" is a song by American recording artist Donna Summer released as the third single from her 1979 album Bad Girls.

[1] Produced by her longtime collaborator Giorgio Moroder with Pete Bellotte, the track combines Summer's trademark disco beats with a more soulful pop sound.

[3] The song caused a rift between Donna and Casablanca label president Neil Bogart, who had promised to wait a month longer than he did before releasing Summer's duet with Barbra Streisand, to allow "Dim" to peak first.

In comparison, Bill Withers set the overall record nearly two years earlier, sustaining a note for 18 seconds in "Lovely Day".

A video for the single, showing Branigan surrounded by a bevy of drag queens (Miss Understood, Hedda Lettuce and Vivacious), was her last, and the release was the end of her association with the label, as she left the music industry to care for her husband, who had been diagnosed with cancer.