"Feedback" is a song by American singer Janet Jackson. The dance-pop–R&B song was written by Rodney "Darkchild" Jerkins, Dernst Emile, LaShawn Daniels, and Tasleema Yasin, and was produced by D'Mile and Jerkins. "Feedback" was released as the lead single from Jackson's tenth studio album, Discipline. In December 2007, the song was announced as the lead single from the album. It premiered on New York radio station Z100 on December 12, 2007, and was released as a digital download on December 29, 2007 in the United States. It was sent to radio stations across the country on January 7, 2008.

The song was generally well-received by critics, who compared it favourably with "Rhythm Nation" and "Escapade". The song was described by Jackson as a metaphor for sexual tension; the lyrical content caused public controversy. Jackson promoted the song live on various television programs within the United States. "Feedback" peaked at number 19 on the Billboard Hot 100, becoming Jackson's biggest hit in the US since 2001. The song peaked at number 3 in Canada, and became a top twenty hit in several other countries. The single was not as successful in Australia or Europe, failing to chart in the United Kingdom.

Jackson filmed the music video for "Feedback" with British director Saam Farahmand, and choreographer Gil Duldulao, Jr. In the video, Jackson was accompanied by 8 dancers, rehearsals took a week, and the video took two days to complete. The song also has more than a dozen official re-mixes.