"Do They Know It's Christmas?" is a charity song written in 1984 by Bob Geldof and Midge Ure to raise money for the 1983–1985 famine in Ethiopia. It was first recorded by Band Aid, a supergroup assembled by Geldof and Ure consisting of popular British and Irish musical acts. It was recorded in a single day at Sarm West Studios in Notting Hill, London, in November 1984.
"Do They Know It's Christmas?" was released in the UK on 7 December 1984. It entered the UK singles chart at number one, where it remained for five weeks, becoming Christmas number one. It sold a million copies in the first week, making it the fastest-selling single in UK chart history until Elton John's "Candle in the Wind 1997". UK sales passed three million on the last day of 1984. The song also reached number one in 13 other countries. In the US, it fell short of the top ten in the Billboard Hot 100 due to a lack of airplay, but sold an estimated 2.5 million copies by 1985. It had sold 11.7 million copies worldwide by 1989 and 3.8 million in the UK by 2017.