New Jersey - Significance region: Local
| Neighbor, Jacob Wise (J. W.), House |
| Neighbor, Leonard, Farmstead |
| Neshanic Historic District |
| Neshanic Mills |
| Neshanic Station Historic District |
| Neutral Water Health Resort Sanitarium |
| Newark Orphan Asylum |
| New Asbury Methodist Episcopal Meetinghouse |
| Newbold, Barzillai, House |
| New Hampton Historic District |
| New Jersey Bell Headquarters Building |
| New Jersey Division of Motor Vehicles Building |
| New Jersey Safe Deposit and Trust Company |
| New Market-Linvale-Snydertown Historic District |
| New North Reformed Low Dutch Church |
| New Point Baptist Church |
| Newton Friends' Meetinghouse |
| Newton Town Plot Historic District |
| Newton Union Schoolhouse |
| New Vernon Historic District |
| New York Susquehanna & Western Railroad Station |
| Nicholson, Sarah and Samuel, House |
| Nitschke, Oswald J., House |
| Normandy Park |
| North Avenue Commercial District |
| North Avenue Commercial Historic District |
| North Branch Historic District |
| North Broad Street Historic District |
| North Church |
| North Long Branch School-Primary No. 3 |
| North Pemberton Railroad Station |
| North Reformed Church |
| Northside Institutional Historic District |
| Nothnagle, C. A., Log House |
| Oak Dell |
| Oakes Estate |
| Oaks Historic District, The |
| Oakwood |
| O'Blenis House |
| Ocean City City Hall |
| Ocean City Residential Historic District |
| Ocean County Courthouse |
| Ocean County Jail |
| Octagonal Poultry House |
| Olcott Avenue Histrict District |
| Old Bridge Historic District |
| Old Broad Street Presbyterian Church and Cemetery |
| Old Coast Guard Station Manasquan Inlet |
| Old Cranbury School |
| Old Eagle Tavern |
| Old First Presbyterian Church |
| Old Grandin Library |
| Old Kentuck |
| Old Mill at Tinton Falls |
| Old Mill Road truss bridge over the Wickecheoke Creek |
| Old Mine Road Historic District |
| Old Monroe School House |
| Old Ryan Farm |
| Old School Baptist Church and Cemetery |
| Old Stone Church |
| Old Stone Presbyterian Church |
| Oldwick Historic District |
| Onderdonk, Isaac, House |
| Orange Free Public Library |
| Orange Memorial Hospital Historic District |
| Orient Baptist Church |
| Osborn, Garret K., House and Barn |
| Our Lady of Mercy Chapel |
| Outwater, Richard, House |
| Oxford Industrial Historic District |
| Packer House |
| Palace Theatre |
| Palatine Road Brige over a minor tributary of the Lamington River |
| Pan American C.M.A. Church |
| Paramus Reformed Church Historic District |
| Parker Homestead |
| Parker, John, Tavern |
| Parlaman, Johannes, House |
| Parsonage of the Montville Reformed Dutch Church |
| Passaic County Court House and United States Custom House and Post Office Historic District |
| Passaic Elks Club |
| Passaic Machine Works-Watts, Campbell & Company |
| Paterson City Hall |
| Paterson Downtown Commercial Historic District |
| Paulison-Christie House |
| Paulus Hook Historic District |
| Peachfield |
| Pearson, Isaac, House |
| Peck's Ferry Bridge |
| Pemberton Historic District |
| Pennington Railroad Station |
| Penns Neck Baptist Church |
| People's Bank and Trust Company Building |
| Perkins House |
| Perry, Peter D., House |
| Perry-Petty Farmstead |
| Perryville Tavern |
| Perth Amboy City Hall and Surveyor General's Office |
| Perth Amboy Ferry Slip |
| Peters Valley Historic District |
Data from United States Park Service and Wikidata
