"9 to 5" is a song written and originally performed by American country music singer Dolly Parton for the 1980 comedy film of the same name. In addition to appearing on the film soundtrack, the song was the centerpiece of Parton's 9 to 5 and Odd Jobs album, released in late 1980. The song was released as a single in November 1980.

The song garnered Parton an Academy Award nomination and four Grammy Award nominations, winning her the awards for "Best Country Song" and "Best Country Vocal Performance, Female". For a time, the song became something of an anthem for office workers in the U.S., and in 2004, Parton's song ranked number seventy-eight on American Film Institute's "100 years, 100 songs".

The song was accompanied by a music video that featured footage of Parton and her band performing, intercut with clips from the film.

The song 9 to 5 was written for the comedy film 9 to 5, starring Jane Fonda, Lily Tomlin, and Parton in her film debut. The song—and film—owe their titles to an organization founded in 1973 with the aim of bringing about better treatment for women in the workplace.

The song is also featured in a musical theater adaptation of the film, featuring a book by the film's original writer, Patricia Resnick, and 20 additional songs written by Dolly Parton. 9 to 5 began previews in Los Angeles on September 9, 2008, and played on Broadway at the Marquis Theatre from April until September 2009 before touring. In 2012, a UK theatre tour of "9 to 5" got underway.

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