William Packard may refer to:
William Alfred Packard (1830–1909), American classical scholar William Doud Packard (1861–1923), American co-founder of Packard Motor Company William Guthrie Packard (1889–1987), American law book publisher, owner of Shepard's Citations William P. Packard (1838–?), American politician William Packard (author) (1933–2002), American poet, playwright, teacher, novelist, and founder/editor of the New York Quarterly