New York - Area of significance: Social History
| Morris Park Senior Citizens Home |
| Morris Park Station |
| Morrisville Engine House |
| Moser Farm |
| Moslem Mosque |
| Mount Hope Cemetery |
| Mount Lebanon Shaker Society |
| Mount Moriah Presbyterian Church |
| Mount Saviour Monastery |
| Mullany, Kate, House |
| Mumford, Lewis, House |
| Murphy Grist Mill |
| Murray Hill Historic District |
| Myers, Stephen and Harriet, House |
| Nash, Rev. J. Edward, Sr., House |
| National Headquarters, March on Washington for Jobs and Freedom |
| National Youth Administration Woodstock Resident Work Center |
| Naval Armory-Convention Hall |
| Nazareth House |
| Nelson Methodist Episcopal Church |
| Neversink Valley Grange No. 1530 |
| New Century Club |
| New Concord Historic District |
| New Courthouse |
| New Kingston Presbyterian Church |
| New Lebanon District No. 8 School |
| New Urecht Avenue Station (Dual System BRT) |
| Newwark Valley Municipal Building and Tappan-Spaulding Memorial Library |
| New York Bible Society |
| New York Congregational Home for the Aged |
| New York Evening Post Building |
| New York State Inebriate Asylum |
| New York Studio School of Drawing, Painting and Sculpture |
| Niagara, The |
| North Bloomfield School |
| North Harpersfield Churches |
| North Presbyterian Church |
| North Street Friends Meetinghouse |
| Norton-Burnham House |
| Norton Village Historic District |
| Notleymere |
| Nut Grove |
| Oak Hill Cemetery |
| Oak Hill Cemetery |
| Oakwood Avenue Presbyterian Church |
| Oakwood Cemetery |
| Ocean Parkway Station (Dual System BRT) |
| Octagon, The |
| Odd Fellows Lodge and Temple |
| Ohave Shalom Synagogue |
| Olbiston Flats |
| Old Bethel Cemetery |
| Old Colony Club |
| Old Courthouse Complex |
| Old Field Club and Farm |
| Old Hartwick Village Cemetery |
| Old Lowville Cemetery |
| Old Stone House of Brooklyn, The |
| Old Town of Flushing Burial Ground |
| Old Trees |
| Old Troy Hospital |
| Olivet Chapel |
| Olmsted, Frederick Law, Sr., Farmhouse |
| Oneida Community Limited Administration Building |
| Oneida Community Mansion House |
| Oneida Lake Congregational Church |
| Oneonta Downtown Historic District |
| Onteora Park Historic District |
| Ormonde |
| Osgood, J.C., Firehouse |
| Oswego City Library |
| Oswego Yacht Club |
| Otis, Job and Deborah, House |
| Otsdawa Baptist Church |
| Ottendorfer Public Library and Stuyvesant Polyclinic Hospital |
| Oulagisket |
| Our Lady of Mount Carmel Grotto |
| Our Lady of Victory National Shrine and Basilica Historic District |
| Oxford Village Historic District |
| Palen, Frank A., House |
| Palmer-Lewis Estate |
| Park Avenue and State Street Historic District |
| Park Church |
| Parkway Theatre |
| Pastures Historic District |
| Pawling Hall |
| Payne Avenue High School |
| Pease, Daniel and Miriam, House |
| Pelham Parkway Station (Dual System IRT) |
| Pelton Mill |
| People's African Methodist Episcopal Zion Church |
| Phyfe, James W. and Anne Smith, Estate |
| Pi Chapter House of Psi Upsilon Fraternity |
| Pig Knoll School |
| Pinckney Corners Cemetery |
| Pine Hollow Cemetery |
| Pioneer Cemetery |
| Pleasant Lawn Cemetery |
| Pleasant Valley Grange Hall |
| Plymouth Church of the Pilgrims |
Data from United States Park Service and Wikidata
