National Historic Register properties in Marion, Ohio

• Harding Tomb
• Harding, Warren G., House
• Hotel Harding
• King, George W., Mansion-Etowah
• Marion Catholic School
• Marion Cemetery Receiving Vault
• Marion County Courthouse
• Marion County Telephone Company Building
• Marion Downtown Historic District
• Marion Township Sub-District #8 School
• Marion Women's Club Home
• Old US Post Office
• Palace Theater
• Soldiers' and Sailors' Memorial Chapel