Kings County or King's County may refer to:
Places Canada Kings County, New Brunswick Kings County, Nova Scotia Kings County, Prince Edward Island King's County (electoral district), abolished in 1892
Ireland County Offaly, formerly called King's County King's County (Parliament of Ireland constituency) King's County (UK Parliament constituency)
United States Kings County, California Kings County, New York, coextensive with Brooklyn Washington County, Rhode Island, called King's County until 1781
Ships Kings County (barque), a large sailing vessel named after Kings County, Nova Scotia
See also King County (disambiguation)