"Hey Boy Hey Girl" is a song by British big beat duo The Chemical Brothers. It was released as a single from their 1999 album Surrender. The vocal sample "Hey girls, B-boys, superstar DJs, here we go!" was taken from "The Roof Is on Fire" by Rock Master Scott & the Dynamic Three.

It peaked at number three on the UK Singles Chart in June 1999 and remained on the chart for ten weeks.(citation needed) The song dates back to 1997 when it was in the Radio 1 Anti-Nazi Mix. The song is also a track in the dancing video game Just Dance 3 and also featured in the 2012 video game Lumines Electronic Symphony.