William Sweet is a Canadian philosopher.
William Sweet may also refer to: William Ellery Sweet (1869–1942), Governor of Colorado William L. Sweet (1850–1931), New York politician William Russell Sweet (1860–1946), Rhode Island painter and sculptor Bill Sweet (born 1947), British bobsledder W. H. S. Sweet (William Henry Seward Sweet, 1838–1890), American soldier, politician, and farmer