"Heatwave" is a single from British grime artist Wiley, featuring vocals from Ms D – known for singing on the Chipmunk song "Oopsy Daisy". It was released as the lead single from his ninth studio album The Ascent on 27 July 2012 for digital download in the United Kingdom. It was written by Wiley, Dayo Olatunji and produced by Rymez, who is unofficially credited as a featured artist. "Heatwave" received major radio airplay, while managing to enter on BBC Radio 1's A-list. The song debuted at number 1 on the UK Singles Chart on 5 August 2012, selling over 114,000 copies, while becoming Wiley's first ever solo number 1.

Richard Kylea Cowie Jr., better known by his stage name Wiley, is a British grime MC, rapper, songwriter, DJ and record producer from Bow, London.