William H. Ellis may refer to:

• William Henry Ellis (engineer) (1860–1945), British civil engineer and steel maker
• William Henry Ellis (politician) (1819–1858), English-born political figure in Newfoundland
• William Hodgson Ellis (1845–1920), British-Canadian chemist
• William Hull Ellis (1867–1948), Justice of the Florida Supreme Court
• William Henry Ellis (businessman)

This disambiguation page lists articles about people with the same name.
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