William Campbell (born 1745 and died on August 22, 1781) was a Virginia farmer, pioneer, and soldier. One of the thirteen signers of the earliest statement of armed resistance to the British Crown in the Thirteen Colonies, the Fincastle Resolutions, Campbell represented Hanover County in the Virginia House of Delegates. A militia leader during the American Revolutionary War, he was known to Loyalists as the "bloody tyrant of Washington County", but to the Patriots he was known for his leadership at the Battle of Kings Mountain and the Battle of Guilford Courthouse.