William Pinnock (February 3, 1782 in Alton, Hampshire – October 21, 1843 in London) was a British publisher and educational writer. He was at first a schoolmaster, then a bookseller. In 1817 he went to London and, in partnership with Samuel Mander, began to publish cheap educational works. The firms first productions were a series of Catechisms, planned by Pinnock, consisting of short popular manuals, arranged in the form of question and answer, of the different departments of knowledge. They were followed by abridged editions of Goldsmiths histories of England, Greece and Rome, and a series of county histories which were no less profitable. Pinnock lost nearly all his money in outside speculation His son, William Henry Pinnock (1813-1885), a clergyman, was the editor and author of several elementary textbooks and scriptural manuals, and of various works on ecclesiastical law and usage.