Oak | oak | Oak Ridge National Laboratory | Oak Ridge, Tennessee | Selly Oak | Oak Park, Illinois | oak leaf cluster | Oak Leaf Cluster | Oak Ridge | Oak Hill Academy | Oak Cliff | Royal Oak | Oak Park | Denali National Park and Preserve | White Oak, Maryland | White Oak | white oak | red oak | poison oak | Oak Tree | Oak Hill | Oak Grove | Red Oak | Oak Hill Theological College | Oak Hill Country Club | Oak Hill Capital Partners | Oak Hill Academy (Mouth of Wilson, Virginia) | Oak Harbor, Ohio | Oak Grove, Oregon | Oak Creek |
Examples include the Neal Smith Wildlife Refuge near Prairie City, Iowa, the Indiana Dunes National Lakeshore in Indiana, numerous State Natural Areas in Wisconsin, the Cook County Forest Preserve District in Illinois, the Oak Openings Preserve Metropark in Ohio, and Pinery Provincial Park on Lake Huron in Ontario.