William Branch Giles (August 12, 1762 – December 4, 1830; the g is pronounced like a j) was an American statesman, long-term Senator from Virginia, and the 24th Governor of Virginia. He served in the House of Representatives from 1790 to 1798 and again from 1801 to 1803; in between, he was a member of the Virginia House of Delegates, and was an Elector for Jefferson (and Aaron Burr) in 1800.