William Bynum may refer to:
Bill Bynum (fl. 1980s–2020s), American businessperson and philanthropist W. F. Bynum (born 1943), British historian Will Bynum (born 1983), American basketball player William D. Bynum (1846–1927), American politician from Indiana William P. Bynum (1820–1909), justice of the North Carolina Supreme Court
See also Billie Gene Bynum (born 1949), American former gridiron football quarterback