Pennsylvania - Significance region: Local
| Pennsylvania Furnace Mansion |
| Pennsylvania Railroad Bridge |
| Pennsylvania Railroad Bridge over Shavers Creek |
| Pennsylvania Railroad Freight Building |
| Pennsylvania Railroad Freight Station |
| Pennsylvania Railroad Old Bridge over Standing Stone Creek |
| Pennsylvania Railroad Passenger Station |
| Pennsylvania Railroad Station |
| Pennsylvania Railroad Station at Wayne |
| Pennsylvania Railroad Station-Latrobe |
| Pennsylvania Railroad Station-Wilkinsburg |
| Pennsylvania State Office Building |
| Penn Towers |
| Penn Treaty Junior High School |
| Penn, William, High School for Girls |
| Penn Wynn House |
| Pennypacker, Benjamin, House |
| Pennypacker, Matthias, Farm |
| Pennypacker, Samuel W., School |
| Peoples Bank Building, The |
| Perikomen Bridge Hotel |
| Perkasie Park Camp Meeting |
| Perry County Courthouse |
| Perry High School |
| Peters-Graham House |
| Peters House |
| Peter Woll and Sons Factory |
| Pettit's Ford |
| Philadelphia High School for Girls |
| Philadelphia Quartermaster Depot |
| Philadelphia Racquet Club |
| Philadelphia & Reading Railway: Lansdale Passenger Station |
| Philadelphia School of Occupational Therapy |
| Philadelphia Wholesales Drug Company Building |
| Philadelphia, Wilmington and Baltimore Railroad Freight Shed |
| Philipsburg Historic District |
| Philips, Hardman, House |
| Phillips, Joseph and Esther, Plantation |
| Phillips Mill Historic District |
| Phipps-McElveen Building |
| Phoenixville Historic District |
| Physicians and Dentists Building |
| Pickle, Simon, Stone House |
| Pierce, Jonas J., House |
| Pierceville Run Agricultural Historic District |
| Pike County Courthouse |
| Pine Grove Historic District |
| Pinehurst Apartments |
| Pitcairn Building |
| Pittsburgh and Lake Erie Passenger Station, Aliquippa |
| Pittsburgh and Lake Erie Railroad Complex |
| Pittsburgh Athletic Association Building |
| Pittsburgh Brass Manufacturing Company Building |
| Pittsburgh Central Downtown Historic District |
| Pittsburgh Mercantile Company Building |
| Pittsburgh Terminal Warehouse and Transfer Company |
| Plant's Covered Bridge |
| Plays and Players |
| Plaza Apartments |
| Pleasant Grove School |
| Pleasant Hill Plantation |
| Pleasureville Historic Historic |
| Plumer House |
| Poe, Edgar Allen, School |
| Point Pleasant Historic District |
| Poole Forge |
| Poplar Lane |
| Portage Historic District |
| Poth and Schmidt Development Houses |
| Poth, Frederick A., Houses, |
| Potter-Allison Farm |
| Potter County Courthouse |
| Pottstown Landing Historic District |
| Pottstown Roller Mill |
| Pottsville Downtown Historic District |
| Powell Farm |
| Powell, John, House |
| Powelton Historic District |
| Powelton, The |
| Powers, Thomas, School |
| Presser Home for Retired Music Teachers |
| Price, Joseph, House |
| Priestley, Dr. Joseph, House |
| Primitive Hall |
| Pringle Electrical Manufacturing Company Building |
| Prizer's Mill Complex |
| Prospect Junior High and Elementary School |
| Protection of the Flag Monument |
| Protestant Episcopal Church of the Saviour |
| Providence Quaker Cemetery and Chapel |
| Provident Mutual Insurance Company |
| Pusey, Joshua, House |
| Qhandlery Corner |
| Quaker City Dye Works |
| Quaker Manor House |
| Quakertown Historic District |
| Quakertown Passenger and Freight Station |
| Quarries of the Hummelstown Brownstone Company |
| Quay, Rev. Anderson B., House |
| Queen Anne Historic District |
Data from United States Park Service and Wikidata
