Sir William Baker (5 November 1705 – 23 January 1770) was an English merchant and politician, a Member of the Parliament of Great Britain and Governor of the Hudson's Bay Company. He was the son of John Baker, a London draper. He became an Alderman of London in 1739 and a director of the East India Company in 1741–5, 1746–50 and 1751–53. He was also deputy chairman (1749, 1751–52), chairman (1749–50, 1752–53), Deputy Governor (1750-60) and the 11th Governor (1760–70) of the Hudson's Bay Company. He was knighted in 1760. The community Baker Lake in Nunavut, Canada was named after him.