William H. Allen and Company (est. 1835) was a bookselling and publishing business in London, England, at first known for issuing works related to the British colonies. It operated from headquarters in Leadenhall Street, later moving to Waterloo Place. Early owners and staff included James P. Allen, William Ferneley Allen (d.1877), and William Houghton Allen. After a series of acquisitions, the W. H. Allen name disappeared in 1991.