National Historic Register properties in Ottawa county/parish, Ohio

• Johnson Island Civil War Prison and Fort Site (Danbury)
• Ohio State Route 51 Bridge Over the Portage River (Elmore)
• Genoa Town Hall (Genoa)
• Main Street Historic District (Genoa)
• Old School Privy (Genoa)
• Cooke, Jay, House (Gibraltar Island)
• North Bass School (Isle St. George)
• Lakeside Historic District (Lakeside)
• Wolcott, Benajah, House (Lakeside--Marblehead)
• Clemons, Alexander, House (Marblehead)
• First Congregational Church (Marblehead)
• Marblehead Lighthouse (Marblehead)
• Andres, Charles, House (Middle Bass Island)
• East Point Manor (Middle Bass Island)
• Golden Eagle Wine Cellars (Middle Bass Island)
• Middle Bass Club Historic District (Middle Bass Island)
• War Of 1812 Battle Site (Mineyahta-on-the-Bay)
• Carroll Township Hall (Oak Harbor)
• Catawba Island Wine Company (Port Clinton)
• Gill-Luchsinger-Bahnsen House and Barn (Port Clinton)
• Island House (Port Clinton)
• Mo-John, Betsy, Cabin (Port Clinton)
• Ottawa County Courthouse (Port Clinton)
• Port Clinton City Hall (Port Clinton)
• St. Thomas Episcopal Church (Port Clinton)
• Union Chapel (Port Clinton)
• Green Island Light (Put-in-Bay)
• Inselruhe (Put-in-Bay)
• Perry's Victory and International Peace Memorial (Put-in-Bay)
• Perry's Victory and International Peace Memorial (Boundary Increase and Additional Documentation) (Put-in-Bay)
• Foster-Gram House (Put-In-Bay)
• South Bass Island Light (South Bass Island)