Protected areas in the U.S. State of Ohio include national forest lands, Army Corps of Engineers areas, state parks, state forests, state nature preserves, state wildlife management areas, and other areas.

Federal lands

National Park Service, Department of the Interior

U.S. Forest Service, Department of Agriculture

U.S. Fish and Wildlife Service, Department of the Interior

Army Corps of Engineers, Department of Defense

State lands

State parks

State memorials

State forests

State wildlife management areas

State nature preserves

Metroparks

A number of regional park districts have been organized in Ohio:

Other significant local areas