W. H. Allen may refer to:
People William Henry Allen (1784–1813), American naval officer William Howard Allen (1790–1822), American naval officer William Henry Allen (academician) (1808–1882), American professor William Henry Allen (engineer) (1844–1926), British engineer William H. Allen (architect) (1858–1936), architect in New Haven, Connecticut W. H. Allen (artist) (1863–1943), English landscape artist
Organisations W. H. Allen & Co., a London bookseller and publisher now owned by Penguin Random House W. H. Allen, Sons & Company Ltd., a British engineering company which merged to become Amalgamated Power Engineering
See also W. H. Allen House, an historic house built in 1873 in Arkansas