约瑟·亨利（英语：Joseph Henry，1797年12月17日－1878年5月13日）是一位美国科学家，是美国促进科学研究所的创始成员之一，也是史密森尼学会首任会长。他被认为是班杰明·富兰克林之后最伟大的美国科学家之一，对于电磁学贡献颇大。他于1830年的独立研究中发现法拉第电磁感应定律，比法拉第早发现这一定律，但其并未公开此发现。

亨利在1831年发明电子门铃（特别是可以使用电线长距离来敲响门铃），然后于1835年发明电子继电器。电感的国际单位制导出单位亨利就是以约瑟·亨利来命名的。

Joseph Henry (December 17, 1797 – May 13, 1878) was an American scientist who served as the first Secretary of the Smithsonian Institution. He was the secretary for the National Institute for the Promotion of Science, a precursor of the Smithsonian Institution. He was highly regarded during his lifetime. While building electromagnets, Henry discovered the electromagnetic phenomenon of self-inductance. He also discovered mutual inductance independently of Michael Faraday, (1791–1867), though Faraday was the first to make the discovery and publish his results. Henry developed the electromagnet into a practical device. He invented a precursor to the electric doorbell (specifically a bell that could be rung at a distance via an electric wire, 1831) and electric relay (1835). The SI unit of inductance, the henry, is named in his honor. Henry's work on the electromagnetic relay was the basis of the practical electrical telegraph, invented by Samuel F. B. Morse and Sir Charles Wheatstone, separately.