Missouri - Criteria: C (architecture/engineering)
| Maples Apartments |
| Maplewood |
| Marion County Courthouse |
| Marion County Jail and Jailor's House |
| Mark Twain Historic District |
| Mark Twain Hotel |
| Mark Twain State Park Picnic Shelter at Buzzard's Roost |
| Marquette Hotel |
| Marquette Hotel |
| Marshall Hotel |
| Marshall School |
| Marten-Becker House |
| Marthasville Hardware Building |
| Marty, Albert, Building |
| Maryland Apartments |
| Maryland Hotel |
| Masonic Temple |
| Masterson, Robert, House |
| May Company Department Store Building |
| May, Dr. H.A., House |
| Mayfair Hotel |
| McBride, William Cullen, Catholic High School |
| McConahay Building |
| McCormick, Isaac, House |
| McCormick, James Robinson, House |
| McDaniel Building |
| McGarry House |
| McIntire, Levi, House |
| McIntyre-Burri House |
| McKoon, John, House |
| McMahon Apartments |
| McMullen, Patrick and Moire, House |
| McPherson-Holland House |
| McVey School |
| Medart's |
| Meierhoffer House |
| Meierhoffer Sand Company Office Building |
| Meloan, Cummins & Co., General Store |
| Melrose Apartments |
| Mense, Frank, House |
| Meramec River U.S. Bridge - J421 |
| Meramec State Park Beach Area Historic District |
| Meramec State Park Lookout House/Observation Tower |
| Meramec State Park Pump House |
| Meramec State Park Shelter House |
| Mercantile Bank & Trust Building |
| Meyer, August, House |
| Meyer House |
| Meyer, John, House |
| Michelson Building |
| Midtown Historic District |
| Mid-Town Historic District |
| Midtown Neighborhood Historic District |
| Milan Railroad Depot |
| Miller Building |
| Miller Building, Matthews Hardware, Metropolitan Building |
| Miller, Issac, House |
| Miller, Joseph M., Mausoleum |
| Miller-Porter-Lacy House |
| Miller-Seabaugh House and Dr. Seabaugh Office Building |
| Milo Apartments |
| Miltenberger, Eugene and Mary A., House |
| Mindrup House-Store |
| Mineral Hall |
| Minor, Charles, House |
| Mississippi Valley Trust Company Building |
| Missouri Apartments |
| Missouri Athletic Club Building |
| Missouri Botanical Gardens |
| Missouri Governor's Mansion |
| Missouri, Kansas and Texas Railroad Depot |
| Missouri, Kansas and Texas Railroad Depot |
| Missouri, Kansas, and Texas Railroad Depot |
| Missouri Pacifc Building |
| Missouri Pacific Depot |
| Missouri Pacific Depot |
| Missouri/Sedalia Trust Company |
| Missouri State Capitol Building and Grounds |
| Missouri State Penitentiary Warden's House |
| Missouri State Teachers Association |
| Missouri Theater |
| Missouri Theater and Missouri Theater Building |
| Missouri United Methodist Church |
| Missouri Valley Trust Company Historic District |
| Moberly Commercial Historic District |
| Moberly Junior High School |
| Moller House |
| Moniteau County Courthouse Square |
| Monje, Paul, House |
| Montauk State Park Open Shelter |
| Montgomery Opera House |
| Montgomery Ward and Company General Merchandise Warehouse |
| Montserrat Recreational Demonstration Area Rock Bath House |
| Montserrat Recreational Demonstration Area Warehouse #2 and Workshop |
| Montserrat Recreation Demonstration Area Bridge |
| Montserrat Recreation Demonstration Area Dam and Spillway |
| Montserrat Recreation Demonstration Area Entrance Portal |
| Moon Brothers Carraige Company Building |
| Moore-Dalton House |
| Moore House |
Data from United States Park Service and Wikidata
