Ward LeRoy Churchill is an American writer and political activist. He was a professor of ethnic studies at the University of Colorado at Boulder from 1990 to 2007. Primarily, his work focuses on the historical treatment of political dissenters and American Indians by the United States. His work features controversial and provocative claims, written in a direct, often confrontational style.

In January 2005, Churchill's work attracted publicity, with the widespread circulation of a 2001 essay, On the Justice of Roosting Chickens. In it, he claimed that people killed in the World Trade Center attacks were involved in provoking the attack. In March 2005 the University of Colorado began investigating allegations that Churchill had engaged in research misconduct; it reported in June 2006 that he had done so. Churchill was fired on 24 July 2007 for research misconduct.