"Supergirl" is a song written by Marti Dodson and Mats Valentin and recorded by American rock band Saving Jane for their album of the same name (2008). It was released as the album's lead single on March 25, 2008.

In 2009, Canadian pop rock singer Suzie McNeil recorded a cover of "Supergirl" for Rock-n-Roller: Reloaded (2009), the re-issue of her second studio album, Rock-n-Roller. It was released in Canada as the lead single for Rock-n-Roller: Reloaded (and second single from the album overall, following "Let's Go") on March 24, 2009 and internationally on August 18, 2009. "Supergirl" entered the Canadian Hot 100 at No. 80.

The video for "Supergirl" was directed by Carlos Lopez Estrada and premiered June 24, 2009 on McNeil's official YouTube channel. In it, McNeil portrays a vigilante-superheroine character who saves various men from compromising positions as well as performing with her band on a stage lit by multi-colored, nightclub-inspired lights.

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