Minnesota - Criteria: A (event)
| Monson's Hoist Bay Resort |
| Montevideo Carnegie Library |
| Moody Barn |
| Morris Carnegie Library |
| Morris Industrial School for Indians Dormitory |
| Mountain Iron Mine |
| Mower, John and Martin, House and Arcola Mill Site |
| Mudbaden Sulphur Springs Company |
| Muskego Church |
| Naniboujou Club Lodge |
| National Farmers' Bank |
| National Woodenware Company Superintendent's Residence |
| Nelimark, Erick and Kristina, Sauna |
| Nelson and Albin Cooperative Mercantile Association Store |
| Nelson School |
| Nerstrand City Hall |
| New Main-Augsburg Seminary |
| New Market Hotel and Store |
| New Ulm Armory |
| New Ulm Commercial Historic District |
| New Ulm High School |
| New Ulm Oil Company Service Station |
| New Ulm Post Office |
| NIAGARA Shipwreck Site |
| Nicollet County Bank |
| Nicollet County Courthouse and Jail |
| Nicollet House Hotel |
| Nobles County War Memorial Building |
| Nokomis Knoll Residential Historic District |
| Nora Free Christian Church |
| Norman County Courthouse |
| Norseland General Store |
| Northeastern Hotel |
| North East Neighborhood House |
| Northern Pacific Depot |
| Northern Pacific Depot |
| Northern Pacific Depot |
| Northern Pacific Depot |
| Northern Pacific Passenger Depot |
| Northern Pacific Passenger Depot |
| Northern Pacific Railroad Shops Historic District |
| Northern Pacific Railway Company Como Shops Historic District |
| Northern Pacific Railway Depot |
| Northern Pacific Railway Depot and Freighthouse |
| Northfield Commercial Historic District |
| Northland |
| North Mankato Public School |
| Northstar Center |
| Northwest Company Post |
| Northwestern Knitting Company Factory |
| Northwestern National Life Insurance Company Home Office |
| Norwood Methodist Episcopal Church |
| Noyes Hall, State School for the Deaf |
| Odeon Theater |
| Odessa Jail |
| O'Donnell Shoe Company Building |
| Ogden Apartment Hotel |
| Ogilvie Watertower |
| Oheyawahe-Pilot Knob |
| Olcott Park Electric Fountain and Rock Garden |
| Old Cut Foot Sioux Ranger Station |
| Old Frontenac Historic District |
| Old Main, Dr. Martin Luther College |
| Old Main-Gustavus Adolphus College |
| Old Main, Macalester College |
| Old Main, Mankato State Teachers College |
| Old Main, St. Olaf College |
| Old Mill State Park WPA/Rustic Style Historic Resources |
| Oliver Boarding House |
| Omaha Depot |
| Onamia Municipal Hall |
| ONOKO (Bulk Freight Steamer) Shipwreck |
| Original Main Street Historic District |
| Oronoco School |
| Orr Roadside Parking Area |
| Ortonville Free Library |
| Osseo Water Tower |
| Oster, John, House |
| Otter Tail County Courthouse |
| Our Lady of the Angels Academy |
| Owatonna City and Firemen's Hall |
| Owatonna Commercial Historic District |
| Owatonna Free Public Library |
| Palace Theater |
| Palmer House Hotel |
| Pan Motor Company Office and Sheet Metal Works |
| Park Elementary School |
| Parker Building |
| Park Rapids Jail |
| Partridge Township Hall |
| Payne Avenue State Bank |
| Peavey Plaza |
| Pence Automobile Company Building |
| Pennie, Daniel, House |
| People's Union Church |
| Pequot Fire Lookout Tower |
| Perham Village Hall and Fire Station |
| Pest House |
| Peters, Ferdinand, House |
| Phelps Mill |
Data from United States Park Service and Wikidata
