"Champagne Supernova" is a song by English rock band Oasis, written by guitarist Noel Gallagher. The seven-minute anthem is the closing track on the record-breaking album (What's the Story) Morning Glory?.

The song was released in the U.S. as a radio single to great success, becoming the band's second No. 1 single on the Modern Rock Tracks chart. It also peaked at No. 20 on the Billboard Hot 100 Airplay, becoming the band's third top 40 single on that chart. The song is considered a fan-favorite and has received widespread critical acclaim.

Noel Gallagher claimed, in a 2005 interview, that he has still not made up his mind as to what the song actually is about.