William Carter was a 16th-century English printer and Roman Catholic martyr born in London. After serving an apprenticeship to the queen's printer, he worked as a secretary for the last Catholic archdeacon of Canterbury. He eventually established his own printing press on Tower Hill, where he produced various religious texts. Due to his religious convictions and the content of his publications, he faced repeated imprisonments and legal challenges under the Elizabethan government, ultimately leading to his death for treason.