Dimmick is a surname. Notable people with the surname include:
Alan Dimmick (born 1961), Scottish photographer Carolyn R. Dimmick (1929–2025), United States federal judge Glenn Dimmick (1905–1999), American electrical engineer Mary Dimmick Harrison (1858–1948), second wife of the 23rd U.S. president Benjamin Harrison Milo Melankthon Dimmick (1811–1872), Democratic member of the U.S. House of Representatives from Pennsylvania William Harrison Dimmick (1815–1861), Democratic member of the U.S. House of Representatives from Pennsylvania
See also Dimmick Township, LaSalle County, Illinois