Arkansas - Area of significance: Architecture
| Mineral Springs Community Building |
| Mirror Lake Historic District |
| Mississippi County Courthouse |
| Mississippi County Courthouse, Chickasawba District |
| Missouri and North Arkansas Depot-Bellefonte |
| Missouri and North Arkansas Depot-Leslie |
| Missouri Pacific Depot |
| Missouri Pacific Depot |
| Missouri-Pacific Depot |
| Missouri-Pacific Depot-Atkins |
| Missouri-Pacific Depot-Clarksville |
| Missouri-Pacific Depot-Newport |
| Missouri-Pacific Depot-Ozark |
| Missouri-Pacific Depot-Russellville |
| Missouri-Pacific Depot-Walnut Ridge |
| Missouri-Pacific Railroad Depot-Arkadelphia |
| Missouri-Pacific Railroad Depot-Camden |
| Missouri-Pacific Railroad Depot-Gurdon |
| Missouri-Pacific Railroad Depot-Hope |
| Missouri-Pacific Railroad Depot-Hot Springs |
| Missouri-Pacific Railroad Depot-Malvern |
| Missouri-Pacific Railroad Depot-McGehee |
| Mitchell House |
| Mitchell House |
| Mitchell House |
| Mitchell, James, School |
| Mitchell-Ward House |
| Mo-Ark Baptist Academy |
| Monroe County Bank Building |
| Monroe County Courthouse |
| Monte Ne |
| Montgomery County Courthouse |
| Monticello North Main Street Historic District |
| Moody House |
| Moore Building |
| Moore House |
| Moore House |
| Moore-Jacobs House |
| Moore, W. H., House |
| Moose Addition Neighborhood Historic District |
| Moose House |
| MORO BAY FERRY (towboat and barge) |
| Morrilton Commercial Historic District |
| Morrilton Railroad Station |
| Morris, Dr. John William, Clinic |
| Morris House |
| Morris House |
| Morris House |
| Morris Institute Dairy Barn |
| Morris, Jim, Barn |
| Morrison Plantation Smokehouse |
| Morris, T. H., House |
| Morrow Hall |
| Morton, Mack, Barn |
| Mountainaire Hotel Historic District |
| Mountain Home Commercial Historic District |
| Mountain View Farm |
| Mount Holly Mausoleum |
| Mount Moriah Masonic Lodge No. 18 |
| Mount Nord Historic District |
| Mount Olive Cumberland Presbyterian Church |
| Mount Olivet Methodist Church |
| Mount Olive United Methodist Church |
| Mount Pleasant Methodist Church |
| Mount Salem Church and School |
| Mount Zion Baptist Church |
| Mrs. Young Building |
| Mt. Carmel Methodist Church |
| Mt. Prospect Methodist Church |
| Mt. Zion Methodist Church |
| Mt. Zion Missionary Baptist Church |
| Mt. Zion Presbyterian Church |
| Mullins Court |
| Munger House |
| Munger, Raymond, Memorial Chapel-University of the Ozarks |
| Municipal Building |
| Murfreesboro Cities Service Station |
| Murphy, Charles H., Sr., House |
| Murphy-Hill Historic District |
| Murphy, William J., House |
| Museum of Automobiles |
| Mutual Aid Union Building |
| Muxen Building |
| Myers House |
| Myler House |
| Naff House |
| Nash House |
| Nash House |
| Nash-Reid-Hill House |
| Nashville American Legion Building |
| National Bank of Commerce Building |
| National Guard Armory |
| National Guard Armory |
| National Guard Armory-Pine Bluff |
| National Old Line Insurance Company Building |
| Neaville, J. A., House |
| Neif, Charles J., House |
| Nelson House |
| Nevada County Courthouse |
| Newbill-Porter House |
Data from United States Park Service and Wikidata
