Titled "To Be Human", the single will feature in the next film from the DC franchise, which stars Israeli actress Gal Gadot in the titular role.
The song features Labrinth, and it is included alongside the movie's original score written by Rupert Gregson-Williams.
Earlier, Sia had said she was collaborating with the "Jealous" hitmaker for a new song.
She also contributed the song "Elastic Heart" to 2013's "The Hunger Games: Catching Fire" soundtrack.
Sia's song "Never Give Up" was a part of the soundtrack of the film "Lion".
The movie, which also stars actor Chris Pine, is slated to release on June 2.
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