William Charles Powers Jr. (May 30, 1946 – March 10, 2019) was an American attorney, academic, and university administrator who served as the 28th president of the University of Texas at Austin, becoming the second-longest serving president in the university's history. He held the position from February 1, 2006, to July 2, 2015, when he was succeeded by Gregory L. Fenves. Before his death, Powers held the Hines H. Baker and Thelma Kelley Baker Chair at the University of Texas School of Law.