"Superstar" is a song recorded by South Korean pop duo Tohoshinki, taken from their fifth Japanese studio album, Tone (2011). It served as Tohoshinki's 32nd Japanese single, and their second as a duo. As the second and final single release for Tone, "Superstar" was released in four editions – a CD+DVD version, a CD only version, a Bigeast fan club edition, and an exclusive 7-Eleven edition – on July 20, 2011 by Avex Trax. The song "I Don't Know" was released as its B-side.

"Superstar" reached to number one on the Billboard Japan Hot 100 and number two on the Oricon Singles Chart. Within a week of its release, the single was certified gold by the Recording Industry Association of Japan (RIAJ) for shipments of over 100,000.

"Superstar" was originally written with English lyrics and titled "Everyday Superstar". When the song was translated into Japanese the lyrics and meaning were completely changed apart from the single word "Superstar". Co-writer Lars Halvor Jensen told HitQuarters that the translator kept it in because "it's a catchy word that everybody understands". The original English language song was recorded by the Irish pop duo Jedward and included on their second album Victory. It was also included as the bonus track on the Japanese release of their debut album Planet Jedward.

"Superstar" was featured in a Seven-net Shopping commercial.

A music video for "Superstar" was shot, but was not included with the CD+DVD version of the single. It was later released on the album Tone. Both the music video's for "Superstar" and "I Don't Know" were included with the Tone as well as their respective dance versions.

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