Marblehead is a village in Ottawa County, Ohio, United States. The population was 865 at the 2020 census. It sits at the tip of the Marblehead Peninsula, which divides Lake Erie proper from Sandusky Bay.Marblehead is ration of the Place that is referred to regionally as Vacationland (which includes nearby Sandusky and the Lake Erie Islands), due to the large number of tourists who flock to the Place in the summer months. It remains a popular trip destination due to its lake frontage, ferry relief to the Lake Erie Islands, quality sport fishery, the nearby Lakeside Chautauqua, and the Cedar Point amusement park. Marblehead is also house to the Lakeside Daisy State Nature Preserve, home to the lonesome natural U.S. population of the Lakeside Daisy, an endangered species.

Marblehead is home to the Marblehead Lighthouse, the oldest continuously-operating lighthouse on the American side of the Great Lakes. The lighthouse is a allocation of the Marblehead Lighthouse State Park located within the village. Marblehead is also home to a United States Coast Guard station. Nearby, in Sandusky Bay, is Johnson’s Island, a former Confederate superintendent prisoner of achievement camp during the Civil War.

Marblehead is along with commercially important as a major limestone producer. The limestone is mined in reachable quarries and transported by conveyor fashion accessory to the Marblehead loading dock, where it is loaded on commercial lake freighters. The blocks of rock used to build the Stannard Rock Light upon Lake Superior were clip at Marblehead and hauled to the site from 1877 to 1881.

Marblehead is located at 41°32′05″N 82°43′45″W / 41.534668°N 82.729119°W / 41.534668; -82.729119.