Oklahoma - Significance region: Local
| Mager Mortgage Company Building |
| Magnolia Petroleum Building |
| Magnolia Service Station |
| Mahoney-Clark House |
| Mahoney House and Garage |
| Main Public Library |
| Main Street Arcade |
| Major County Courthouse |
| Maney Historic District |
| Mangum Armory |
| Mangum Community Building |
| Manhattan Building |
| Manitou Jail |
| Manual Training High School for Negroes |
| Maple Ridge Historic Residential District |
| Mardock Mission |
| Markham School and Teacherage |
| Marland, Charlotte, House |
| Marland Estate, Inc. Gatehouse |
| Marland Filling Station |
| Marlow Armory |
| Marshall County Courthouse |
| Marshall Hall |
| Mascho Building and Public Privy |
| Mason, A. J., Building |
| Masonic Temple |
| Masonic Temple |
| Mass Grave of the Mexican Miners |
| Mayfair, The |
| Mayo Building |
| Mayo Hotel |
| Mayo Motor Inn |
| McAlester Armory |
| McAlester DX |
| McAlester House |
| McAlester Scottish Rite Temple |
| McAllister House |
| McAnally, William, House |
| McClain County Courthouse |
| McClean House |
| McClung House |
| McCristy-Knox Mansion |
| McCurtain, Edmund, House |
| McDougal Filling Station |
| McFarlin Building |
| McFarlin, Robert M., House |
| McGraw, James J., House |
| McGregor House |
| McIntosh County Courthouse |
| McKinney, Collin, House |
| McLain Rogers Park |
| McLean, B. W., House and Office |
| McNaughton, John Patrick, Barn |
| Meacham Building |
| Meaders, F.W., House |
| Medford Bathhouse and Swimming Pool |
| Medical Arts Building |
| Meeker Town Hall |
| Meers Mining Camp |
| Meloy House |
| Mendenhall's Bath House |
| Mensch, William Alfred, Building |
| Merchants National Bank Building |
| Merchants Transfer and Storage |
| Mesta Park |
| Methodist Church of Marshall |
| Methodist Episcopal Church, South |
| Methodist Episcopal Church, South |
| Meyer, Maurice, Barracks |
| Miami Downtown Historic District |
| Miami Marathon Oil Company Service Station |
| Miami Original Nine-Foot Section of Route 66 Roadbed |
| Mideke Supply Building |
| Midlothian School |
| Mijo Camp Industrial District |
| Milk Bottle Grocery |
| Miller, George and Margaret, House |
| Miller-Jackson Building |
| Miller's Boulevard Historic District |
| Miller-Washington School |
| Minco Armory |
| Mine Rescue Station |
| Mitchell Hall |
| M.K. and T. Depot in Laverne |
| Modoc Mission Church and Cemetery |
| Monhollow Artificial Stone House |
| Montgomery-Linam House |
| Moore-Lindsay House |
| Moore Manor |
| Moore Public School Building |
| Moore Ranch |
| Moore-Settle House |
| Morris House |
| Morrison Baptist Church |
| Morrison Suspension Bridge |
| Morrow Home Place |
| Moss School Gymnasium |
| Mouser Grain Elevator |
| Mouser Woodframe Grain Elevator/Collingwood Elevator |
| Mulhall United Methodist Church |
Data from United States Park Service and Wikidata
