Oklahoma - Criteria: C (architecture/engineering)
| Meaders, F.W., House |
| Meeker Town Hall |
| Meloy House |
| Mensch, William Alfred, Building |
| Merchants National Bank Building |
| Mesta Park |
| Methodist Church of Marshall |
| Methodist Episcopal Church, South |
| Methodist Episcopal Church, South |
| Miami Marathon Oil Company Service Station |
| Midlothian School |
| Milk Bottle Grocery |
| Mincks-Adams Hotel |
| Minco Armory |
| M.K. and T. Depot in Laverne |
| Moore-Lindsay House |
| Moore-Settle House |
| Morrison Baptist Church |
| Mulhall United Methodist Church |
| Mullendore Mansion |
| Municipal Auditorium |
| Murphy, George A., House |
| Murray County Courthouse |
| Murrell Home |
| New Cordell Courthouse Square Historic District |
| Newkirk Water Purification Plant |
| Nichols Park |
| Noble County Courthouse |
| Noble Hotel |
| Norman Public Library |
| Oklahoma A & M College Agronomy Barn and Seed House |
| Oklahoma City Ford Motor Company Assembly Plant |
| Oklahoma County Courthouse |
| Oklahoma Natural Gas Company Building |
| Oklahoma Odd Fellows Home at Checotah |
| Oklahoma Publishing Company Building |
| OKLA Theater |
| Okmulgee Downtown Historic District |
| Old Atoka State Bank |
| Old Santa Fe Railroad Bridge |
| Old Washington County Courthouse |
| Oleson-Crane Building |
| Opossum Creek Bridge |
| Osage Bank of Fairfax |
| Overholser House |
| Overstreet House |
| Owen Park Historic District |
| Page Soddy |
| Parker, Quanah, Star House |
| Park Etude |
| Parkside Elementary School |
| Patterson, A. W., House |
| Pawnee Agency and Boarding School Historic District |
| Pawnee Armory |
| Pawnee County Courthouse |
| Pawnee Municipal Swimming Pool and Bathhouse |
| Payne County Courthouse |
| Pensacola Dam |
| Perkins Downtown Historic District |
| Perry Armory |
| Perry Courthouse Square Historic District |
| Perry Lake Park |
| Perryman Ranch Headquarters |
| Petroleum Building |
| Philcade Building |
| Phillips 66 Station No. 1423 |
| Phillips, Waite, Mansion |
| Philtower |
| Pierce Block |
| Pilgrim Congregational Church |
| Pioneer Woman Statue |
| Platt National Park Historic District |
| Pocasset Gymnasium |
| Pollock, Donald, House |
| Poncan Theatre |
| Pond Creek Masonic Lodge #125 |
| Pontotoc County Courthouse |
| Post Office, Courthouse, and Federal Office Building |
| Poteau Community Building |
| Poteau School Gymnasium-Auditorium |
| Prague City Hall and Jail |
| Price Tower |
| Provine Service Station |
| Pryor Creek Bridge |
| Public Library of Enid and Garfield County |
| Railroad Exchange Building |
| Ralls, Joe, House |
| Ramona Theatre |
| Ranch Acres Historic District |
| Randall Tire Company |
| Reifsnyder, Josephine, Lustron House |
| Reynolds, James E., House |
| Rio Grande Ranch Headquarters Historic District |
| Riverside Studio |
| Robbers Cave State Park |
| Roberta School Campus |
| Rock Cafe |
| Rock Island Depot |
| Rock Island Passenger Station |
| Rock Island Passenger Station |
Data from United States Park Service and Wikidata
