“Do or Die” is a song by American rock band Thirty Seconds to Mars, featured on their fourth studio album Love, Lust, Faith and Dreams (2013). Written and produced by lead vocalist Jared Leto, the lyrics of “Do or Die” explore the feeling of standing up and living dreams. Its music, which is imbued with elements of arena rock and heavily influenced by electronica, is styled in experimental rock. The song was serviced to mainstream radio in July 2013 in Europe, and was sent to modern rock radio in the United States in March 2014. A remixed version of the song by Dutch music producer Afrojack was digitally released in March 2014 and later included on the deluxe edition of his debut studio album Forget the World.
“Do or Die” received positive reviews from music critics, who hailed its musical diversity and its grand and euphoric nature. It charted in some nations due to digital sales from the parent album. The accompanying music video, directed by Jared Leto, features live footage of Thirty Seconds to Mars onstage as well as stories from their fans, personally interviewed by Leto. It garnered general acclaim from critics, who lauded the atmosphere and simplicity of the video. The song was included in the band’s Love, Lust, Faith and Dreams Tour (2013–14).