Sir William Dugdale (1605–1686) was an English antiquary.
William Dugdale may also refer to: William Dugdale (publisher) (1800–1868), an English publisher, printer, and bookseller of politically subversive publications and pornographic literature William Stratford Dugdale (1800–1871), a British Tory (and later Conservative Party) politician. Sir William Dugdale, 2nd Baronet (1922–2014), chairman of Aston Villa Football Club