William Corbett was an English composer, violinist, and concert performer. The Director of New Theater (Lincoln's Inn Fields, London) from 1700, Corbett was appointed orchestra director of King's Theatre, The Haymarket in 1705 and became a member of the Royal Orchestra in 1709.
In 1716, he was appointed Director of the King's Band. From 1715 to 1726, Corbett lived in Italy, returning to London in 1727. It has been speculated that while abroad, Corbett was possibly acting as an agent for the Crown.