William Todd may refer to:

Bill Todd (William Laurence Todd), NASA program manager and aquanaut Billy Todd (1929–2008), singer Will Todd (born 1970), English composer and pianist William E. Todd (born 1962), United States ambassador to Cambodia William Frederick Todd (1854–1935), Canadian politician William Gowan Todd (1820–1877), Catholic priest, author, and humanitarian William H. Todd (1864–1932), American shipbuilder William L. Todd (1818–1876), creator of the flag of California William Todd (businessman) (1803–1873), American businessman, Canadian senate nominee William Todd (soldier) (1739–1810), American soldier and politician William Andrew Todd (2002-present), Canadian entrepreneur

See also