William F. Allen is the name of:
William Fessenden Allen (1831–1906), American businessman and politician in the Kingdom of Hawaii and Republic of Hawaii William F. Allen (New York politician) (1808–1878), American lawyer and politician William F. Allen (Delaware politician) (1883–1946), American businessman and politician William Francis Allen (1830–1889), American classical scholar William F. Allen (engineer), former CEO of Stone & Webster