"Heart Station" is a song by Japanese musician Hikaru Utada, which was released as a double A-side single alongside her song "Stay Gold" on February 20, 2008. The title track for her album Heart Station, the song was heavily promoted on radio stations, for three weeks it was the number one song on the newly established Billboard Hot Top Airplay chart, despite only managing to reach number two on the Billboard Japan Hot 100.

In February 2007, Utada released "Flavor of Life", the theme song for the drama Hana Yori Dango Returns, which became one of her most commercially successful singles, selling over eight million downloads and becoming the second most digitally successful song of 2007 globally. This was followed by a second single in 2007, featuring the songs "Beautiful World", the theme song for the animated film Evangelion: 1.0 You Are (Not) Alone, and "Kiss & Cry", a song used to promote Nissin Foods' Cup Noodles.

In October 2007, Utada's song "Stay Gold" was unveiled in Kao Corporation's Asience shampoo commercials. It was released as a ringtone on December 7, managing to be downloaded 250,000 times a month after its release, and was promoted at radio stations in mid January 2008.

During the process of writing the song, Utada decided to make the song have a theme of "heart electric waves", likening emotional signals to radio signals. She decided on this because she felt that radio stations had a hand-made, analog, loving and warm feeling to them, which resonated with the song matter.

The song was used in commercials for cellphone music store Recochoku from late January 2008, which featured Utada dancing in a bear suit fastened in the shape of her stuffed teddy bear, Kuma Chang.

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