William Jennings Bryan Harriss (December 11, 1897 – September 19, 1963) was an American professional baseball pitcher. He played in Major League Baseball (MLB) between the 1920 and 1928 seasons for the Philadelphia Athletics and Boston Red Sox. A native of Brownwood, Texas, he studied at Howard Payne University. In a nine-season career, Harriss posted a 95–135 record with 644 strikeouts and a 4.26 ERA in 349 appearances, including 228 starts, 89 complete games, seven shutouts, 78 games finished, 16 saves, and 1750+1⁄3 innings of work. Harriss died in Temple, Texas at age 65.