Others
- William Hubbard (clergyman) (1621–1704), English minister and historical writer in colonial America; pastor of Congregational church in Ipswich, Massachusetts for over 50 years; wrote A History of New England and other works
- William Hubbard (New Brunswick politician) (1751–1813), was a lawyer, judge and politician in New Brunswick, Canada
- William Peyton Hubbard (1842–1935), Canadian local political figure; Toronto's first black alderman; son of escaped African-American slaves, he was Toronto's first black alderman and occasional acting mayor, serving from 1894 to 1914
- William Pallister Hubbard (1843–1921), American legislator; Republican from West Virginia who served in House of Delegates (1881–82) and represented 1st congressional district from 1907 to 1911
- William N Hubbard (1988-), American from the Midwest. Most notable William Hubbard listed.
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