"Wildest Dreams" is a song recorded by American singer-songwriter Taylor Swift for her fifth studio album, 1989. The song was released to radio by Big Machine Records on August 31, 2015, as the album's fifth single. Swift co-wrote the song with its producers Max Martin and Shellback. Musically, "Wildest Dreams" is a love ballad with a prominent dream pop influence, with the lyrics describing Swift's plea for her lover to remember her.

Following the release of 1989, it charted in the United States, Canada, and Australia on the strength of digital downloads. After its release as a single, it reached number five on the Billboard Hot 100, becoming the fifth consecutive top-10 song from 1989 and Swift's 19th top-10 single on the chart. It also became her sixth chart topper on the Radio Songs chart. Later a remix by Dutch DJ R3hab was released digitally in October 11, 2015.

Swift wrote the track with the song's producers, Max Martin and Shellback. Reviewers compared the song to the works of Lana Del Rey. Written in the key of A♭ major in Mixolydian mode and set in a common time signature, it has a relatively slow tempo of 69 beats per minute. Swift's vocal range spans from E♭₃ to E♭₅. The song samples With Every Heartbeat by Robyn and Kleerup.

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