William Bryson "Budget" Seaman (c. 1875 – April 18, 1910) was an American football and baseball player and coach. He served as the head football coach at Waynesburg College by—now known as Waynesburg University–in 1897, Washington & Jefferson College from 1900 to 1904, and Western Reserve University—now known as Case Western Reserve University—from 1906 to 1909. His Western Reserve team won two Ohio Athletic Conference titles, in 1907 and 1908, during his four-year tenure.