New Jersey - Criteria: A (event)
| Olcott Avenue Histrict District |
| Old Barracks |
| Old Bergen Church |
| Old Bridge Historic District |
| Old Broad Street Presbyterian Church and Cemetery |
| Old Cape May County Courthouse Building |
| Old Cranbury School |
| Old Dutch Parsonage |
| Old Eagle Tavern |
| Old First Presbyterian Church |
| Old Grandin Library |
| Old Mill at Tinton Falls |
| Old Mine Road Historic District |
| Old Monroe School House |
| Old Queen's |
| Old Ryan Farm |
| Old School Baptist Church and Cemetery |
| Old Schoolhouse |
| Old Scots Burying Ground |
| Old Stone Arch Bridge |
| Oldwick Historic District |
| Oradell Station |
| Orange Free Public Library |
| Orange Station |
| Orient Baptist Church |
| Our Lady of Mercy Chapel |
| Oxford Furnace |
| Oxford Industrial Historic District |
| Palace Amusements |
| Palace Theatre |
| Palisade Interstate Parkway |
| Palisades Interstate Park |
| Pan American C.M.A. Church |
| Paramus Reformed Church Historic District |
| Parker, John, Tavern |
| Park Ridge Station |
| 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 |
| Pearson-How, Cooper, and Lawrence Houses |
| Pearson, Isaac, House |
| Pemberton Historic District |
| Pennington Railroad Station |
| Pennsylvania Railroad Bridge |
| Perry-Petty Farmstead |
| Perryville Tavern |
| Perth Amboy City Hall and Surveyor General's Office |
| Perth Amboy Ferry Slip |
| Perth Amboy Station |
| Peters Valley Historic District |
| Philadelphia and Reading Railroad Freight Station |
| Philadelphia Watch Case Company Building |
| Phillipsburg Commercial Historic District |
| Phillips, Joseph, Farm |
| Pine Street Historic District |
| Pitman Grove |
| Pittsgrove Presbyterian Church |
| Pittstown Historic District |
| Plainfield Central Fire Headquarters |
| Plainfield Civic District |
| Plainfield Station |
| Plaster Mill |
| Pleasant Mills |
| Pleasant Valley Historic District |
| Pluckemin Village Historic District |
| Plukemin Continental Artillery Cantonment Site |
| Pohlmann's Hall |
| Poile Zedek Synagogue |
| Point Breeze |
| Pompton Plains Railroad Station |
| Port Colden Historic District |
| Port Murray Historic District |
| Port Republic Historic District |
| Potter's Tavern |
| Potterstown Rural Historic District |
| Pottersville Village Historic District |
| Prallsville District |
| Presby Memorial Iris Gardens Horticultural Center |
| Presbyterian Church in Basking Ridge |
| Princeton Battlefield |
| Princeton Historic District |
| Princeton Nurseries Historic District |
| Protestant Foster Home |
| Public School Number Two |
| Pursley's Ferry Historic District |
| Quaker Meeting |
| Queen of Angels Church |
| Queen's Campus, Rutgers University |
| Radburn |
| Radburn-Fair Lawn Station |
| Rahway Theatre |
| Ralston Historic District |
| Ramsaysburg Homestead |
| Rancocas Historic Village |
| Raritan Landing Archeological District |
| Raritan-Readington South Branch Historic District |
| Raritan Station |
| Raven Rock Historic District |
Data from United States Park Service and Wikidata
