"Wasted Nights" is a song by Japanese rock band One Ok Rock, released as the third and last single from their ninth studio album Eye of the Storm (2019). Written by vocalist Takahiro Moriuchi with producer Pete Nappi and songwriters Janee Bennett and Jamil Kazmi, the song was released for digital download and streaming on February 1, 2019, by A-Sketch in Japan and internationally by Fueled by Ramen, serving as the theme song for the live-action film Kingdom released on April 19, 2019. Its lyrics encourage the listeners to live in the moment.