New York - Criteria: A (event)
| New York School of Applied Design |
| New York State Armory |
| New York State Barge Canal |
| New York State Capitol |
| New York State Court of Appeals Building |
| New York State Department of Education Building |
| New York State Inebriate Asylum |
| New York Stock Exchange |
| New York Studio School of Drawing, Painting and Sculpture |
| New York Telephone Company Building |
| New York, Westchester and Boston Railroad Administration Building |
| New York Yacht Club |
| Niagara Falls Armory |
| Niagara Falls Public Library |
| Niagara Falls School District Administration Building |
| Niagara Hudson Building, The |
| Niagara Reservation |
| Niagara, The |
| Nichols High School |
| Niles Farmhouse |
| Nine Mile Creek Aqueduct |
| Nine Partners Meeting House and Cemetery |
| Niskayuna Railroad Station |
| No. 8 Thomas Street Building |
| North Blenheim Historic District |
| North Bloomfield School |
| Northbrook Lodge |
| North Creek Railroad Station Complex |
| Northern River Street Historic District |
| North Hempstead Town Hall |
| North Lyndon Schoolhouse |
| North Main and West Water Commercial Historic District |
| North Main-Bank Streets Historic District |
| North Main Street Historic District |
| North Main Street Historic District |
| North Main Street School |
| North Park Branch Library |
| Northport Public Library |
| North Presbyterian Church |
| Northrup Hill School District 10 |
| North Salem Town Hall |
| Northside Historic District |
| North Star School District No. 11 |
| North Street Friends Meetinghouse |
| Northville Historic District |
| Norton-Burnham House |
| Norton, Rev. Asahel, Homestead |
| Norton Village Historic District |
| Norway Baptist Church (former) |
| Norwich Pharmacal Company Warehouse |
| Notleymere |
| Notman Bridge |
| Nott Memorial Hall |
| Nott Street School |
| Noxon Bank Building |
| Noyes Cottage |
| Noyes, John, House |
| Oak Hill Cemetery |
| Oak Knitting Company |
| Oak Street School |
| Oakwood Avenue Presbyterian Church |
| Oakwood Cemetery |
| Oblong Friends Meetinghouse |
| Ocean Parkway |
| Ocean Parkway Jewish Center |
| Ocean Parkway Station (Dual System BRT) |
| Octagonal Schoolhouse |
| Octagon, The |
| Odd Fellows Lodge and Temple |
| O'Donohue, C. A., House |
| Offerman Building |
| Office Building and U.S. Light-House Depot Complex |
| Ogdensburg Armory |
| Ogdensburg Harbor Lighthouse |
| Ohave Shalom Synagogue |
| Oheka |
| Old Albany Post Road |
| Old Allegany County Courthouse |
| Old Blenheim Bridge |
| Old Chappaqua Historic District |
| Old City Road Stone Arch Bridge |
| Old Cochecton Cemetery |
| Old Colony Club |
| Old First Church |
| Old Fort House |
| Old Fort Niagara-Colonial Niagara Historic District |
| Old Gravesend Cemetery |
| Old Grolier Club |
| Old Hartwick Village Cemetery |
| Old House, The |
| Old Lutheran Parsonage |
| Old Madison County Courthouse |
| Old Nassau County Courthouse |
| Old New York Evening Post Building |
| Old Quaker Meetinghouse |
| Old Southeast Town Hall |
| Old State Road Bridge |
| Old Stone Barracks |
| Old Stone Fort |
| Old Stone House Library, The |
Data from United States Park Service and Wikidata
