Oklahoma - Area of significance: Architecture
| Lawton High School |
| Lawton National Guard Armory |
| Ledbetter, H.E., House |
| Lee, Jeff, Park Bath House and Pool |
| Lee, Robert E., School |
| Lewis Ross/Cherokee Orphan Asylum Springhouse |
| Liberty Federal Savings and Loan Association Building |
| Lincoln Terrace East Historic District |
| Logan Apartments |
| Logan County Courthouse |
| Love County Courthouse |
| Love County Jail and Sheriff's Residence |
| Lyons, Sidney and Mary, House and Commercial Historic District |
| Lytton Building-Masonic Hall |
| Mager Mortgage Company Building |
| Magnolia Petroleum Building |
| Mahoney-Clark House |
| Mahoney House and Garage |
| Main Public Library |
| Major County Courthouse |
| Maney Historic District |
| Mangum Armory |
| Mangum Community Building |
| Manhattan Building |
| Manitou Jail |
| Maple Ridge Historic Residential District |
| Marland, Charlotte, House |
| Marland Estate, Inc. Gatehouse |
| Marland Filling Station |
| Marland-Paris House |
| Marlow Armory |
| Marshall County Courthouse |
| Marshall Hall |
| Mascho Building and Public Privy |
| Masonic Temple |
| Masonic Temple |
| Mayo Hotel |
| Mayo Motor Inn |
| McAlester Armory |
| McAlester DX |
| McAlester House |
| McAlester Scottish Rite Temple |
| McAllister House |
| McBirney, James H., House |
| McClain County Courthouse |
| McClean House |
| McClung House |
| McCristy-Knox Mansion |
| McFarlin Building |
| McFarlin, Robert M., House |
| McGraw, James J., House |
| McGregor House |
| McLain Rogers Park |
| McLean, B. W., House and Office |
| McNaughton, John Patrick, Barn |
| Meaders, F.W., House |
| Medical Arts Building |
| Meeker Town Hall |
| Meloy 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 |
| Miami Downtown Historic District |
| Miami Marathon Oil Company Service Station |
| Mid-Continent Life Building |
| Mideke Supply Building |
| Midlothian School |
| Milk Bottle Grocery |
| Miller, George and Margaret, House |
| Miller-Jackson Building |
| Miller's Boulevard Historic District |
| Mincks-Adams Hotel |
| Minco Armory |
| M.K. and T. Depot in Laverne |
| Monhollow Artificial Stone House |
| Montgomery-Linam House |
| Moore-Lindsay House |
| Moore Manor |
| Moore Ranch |
| Moore-Settle House |
| Morrison Baptist Church |
| Morrow Home Place |
| Moss School Gymnasium |
| Mouser Woodframe Grain Elevator/Collingwood Elevator |
| Mulhall United Methodist Church |
| Mullendore Mansion |
| Municipal Auditorium |
| Murphy, George A., House |
| Murphy House |
| Murray County Courthouse |
| Murrell Home |
| Muskogee County Courthouse |
| Muskogee Depot and Freight District |
| Mutual Savings and Loan Association Building |
| Nash-Swindler House |
| New Cordell Courthouse Square Historic District |
Data from United States Park Service and Wikidata
