"Somersault" is a song by English musical duo Zero 7 featuring Australian singer Sia. It was released on 17 May 2004 as the second single from the band's second studio album, When It Falls (2004). It was the third time Zero 7 had featured Sia on a single release, following their singles, "Destiny" and "Distractions".

Sia Kate Isobelle Furler is an Australian singer and songwriter. Born and raised in Adelaide, she started her career as a singer in the acid jazz band Crisp in the mid-1990s. When Crisp disbanded in 1997, she released her debut studio album, OnlySee, in Australia. Sia moved to London and provided vocals for the British duo Zero 7. She released her second studio album, Healing Is Difficult, in 2001 and her third, Colour the Small One, in 2004.