William Hess may refer to:
Willy Hess (violinist) (1859–1939), violin virtuoso and violin teacher Willy Hess (composer) (1906–1997), Swiss musicologist, composer, and Beethoven scholar William E. Hess (1898–1986), U.S. representative Bill Hess (1923–1978), head coach William J. Hess (died 1988), American architect William M. Hess (1928-2017), American chemist known for contributions to characterization of carbon black dispersion in rubber