William Hastings, 1st Baron Hastings KG was an English nobleman. A loyal follower of the House of York during the Wars of the Roses, he became a close friend and one of the most important courtiers of King Edward IV, whom he served as Lord Chamberlain. At the time of Edward's death he was one of the most powerful and richest men in England. He was executed following accusations of treason by Edward's brother and ultimate successor, Richard III. The date of his death is disputed; early histories give 13 June, which is the traditional date.

The Lord Chamberlain of the Household is the most senior officer of the Royal Household of the United Kingdom, supervising the departments which support and provide advice to the Sovereign of the United Kingdom while also acting as the main channel of communication between the Sovereign and the House of Lords. The office organises all ceremonial activity such as garden parties, state visits, royal weddings, and the State Opening of Parliament. They also oversee the Royal Mews and Royal Travel, as well as the ceremony around the awarding of honours.