David Jon Gilmour, CBE, D.M. (born 6 March 1946) is an English rock musician and multi-instrumentalist who is best known as the guitarist, one of the lead singers and main songwriters in the progressive rock band Pink Floyd. It is estimated that as of 2011, the group has sold over 230 million albums worldwide, including 74.5 million units sold in the United States.

In addition to his work with Pink Floyd, Gilmour has worked as a producer for a variety of artists, and has enjoyed a successful career as a solo artist. Gilmour has been actively involved with many charities over the course of his career.

In 2003, he was appointed CBE for his charity work and was awarded with the Outstanding Contribution title at the 2008 Q Awards. In 2011, Rolling Stone Magazine ranked him #14 in their list of the greatest guitarists of all time.

Gilmour was born in Cambridge, England. His father, Douglas Gilmour, was a senior lecturer in zoology at the University of Cambridge and his mother, Sylvia (née Wilson), was a teacher and film editor who raised her family at Grantchester Meadows, later immortalised by a Roger Waters song on Pink Floyd's Ummagumma. He has a younger brother who is also a musician.

Gilmour attended The Perse School on Hills Road, Cambridge, and met future Pink Floyd guitarist and vocalist Syd Barrett, along with bassist and vocalist Roger Waters who attended Cambridgeshire High School for Boys, also situated on Hills Road. He studied modern languages to A-Level and, along with Barrett, spent his lunchtime learning to play the guitar. They were not yet bandmates however, and Gilmour started playing in the band Joker's Wild in 1962. Gilmour left Joker's Wild in 1966 and busked around Spain and France with some friends. However, they were not very successful, living virtually a hand-to-mouth existence. In July 1992, Gilmour stated in an interview with Nicky Horne on BBC radio that he ended up being treated for malnutrition in a hospital. In 1967, they returned to England.