"Man's World" is a song recorded, written, and produced by Welsh singer-songwriter Marina for her fifth studio album, Ancient Dreams in a Modern Land (2021).

The song was also produced by American musician Jennifer Decilveo, who Marina enlisted as part of her effort to work with an all-female production team.

Its lyrics criticize history's oppressive treatment of women and minority groups, and Marina states that she no longer wishes to live in a world exclusively led by men.

The song received positive reviews from music critics, and Marina's fulfillment of her promise to work with all-females on the track was commonly discussed.

Filmed in Simi Valley, California, it features the singer performing evocative choreography with a troupe of similarly dressed dancers and was inspired by the works of the neoclassicism movement.

[10] In September 2020, Marina shared a snippet of a previously unreleased song called "Happy Loner", leaving critics to assume that new music from the singer would arrive shortly.

[11] On 13 November 2020, she officially confirmed the release of a new song, titled "Man's World", when she posted the single's cover artwork to her social media accounts.

[13] Mike Wass, a contributor to Idolator, remarked that "Marina has traditionally spent several years on projects" so the announcement of "Man's World" was unexpected.

[17] On 11 December 2020, a stripped-down version of "Man's World" was released to digital retailers, featuring a black and white variant of the cover artwork.

The original idea for the song was to write a snapshot of how women and LGBTQ+ individuals have been subjugated and discriminated against throughout history going back to the Salem witch trials, where any person who was deemed abnormal or slightly alternative was singled out.

[9] The song's instrumentation consists of piano, performed by Marina herself, in addition to Patrick Kelly on bass, Sam Kauffman on drums, and David Levita on guitar.

[27] Derrick Rossignol from Uproxx said that the song's chorus ("Mother Nature's dying, nobody's keeping score / I don't want to live in a man's world anymore") confirms that "Marina put her money where her mouth is", in regards to her decision to work with female musicians on her fifth album.

[32] In his review of the parent album, Thomas H. Green from The Arts Desk acclaimed both "Man's World" and the title track for their chutzpah.

[37] The accompanying music video for "Man's World" was first announced on 16 November 2020 when she uploaded a 15-second teaser of the clip to her social media accounts.