Massachusetts - Criteria: A (event)
| Pilgrim Congregational Church |
| Pilgrim Congregational Church |
| Pilgrim Memorial Church and Parish House |
| Pilgrim Mills |
| Pill Hill Historic District |
| Pillsbury Summer House |
| Pine Grove Cemetery |
| Pine Grove Cemetery |
| Pine Grove Cemetery |
| Pine Ridge Road-Plainfield Street Historic District |
| Pine Street School |
| Pinewoods Camp |
| Pinkham House |
| Pinkham, Lydia, House |
| Pittsfield Cemetery |
| Pittsfield & North Adams Passenger Station and Baggage & Express House |
| Plainfield Center Historic District |
| Platts-Bradstreet House |
| Pleasant-School Street Historic District |
| Pleasant Street Congregational Church |
| Pleasant Street Historic District |
| Pleasant Street Historic District |
| Pleasant Street School |
| Pleasant Street School |
| Plimpton, Simon, Farmhouse |
| Plummer Memorial Library |
| Plymouth Light Station |
| Plymouth Rock |
| Plymouth Village Historic District |
| Plympton Village Historic District |
| Point Allerton Lifesaving Station |
| Point Neighborhood Historic District |
| Polish National Home |
| Poli's Palace Theater |
| Pomeroy Terrace Historic District |
| Ponakin Bridge |
| Pond Hill School |
| Pond Street School |
| Pondville Cemetery |
| Ponkapoag Camp of Appalachian Mountain Club |
| Poor House and Methodist Cemetery |
| Porcellian Club |
| Porter-Phelps-Huntington House |
| PORTLAND (Shipwreck and Remains) |
| Port Royal House |
| Potter-O'Brian House |
| Powder House Park |
| Powers Institute Historic District |
| Pratt, Capt. Josiah, House |
| Pratt, Dexter, House |
| Pratt Historic Building |
| Prentiss, Addison, House |
| Prescott Town House |
| Primrose Street Schoolhouse |
| Prince Hall Mystic Cemetery |
| Proctor, John, House |
| Produce Exchange Building |
| Prospect-Gaylord Historic District |
| Prospect Heights Historic District |
| Prospect Hill Cemetery |
| Prospect Hill School |
| Prospect House |
| Prospect Park |
| Providence Court |
| Providence Street Historic District |
| Provincetown Historic District |
| Provost, Arthur, Three-Decker |
| PT BOAT 796 (torpedo boat) |
| Publicity Building |
| Purchase-Ferre House |
| Putnam, Gen. Israel, House |
| Putnam Street Historic District |
| Queguechan Valley Mills Historic District |
| Quincy Electric Light and Power Company Station |
| Quincy Grammar School |
| Quincy Granite Railway |
| Quincy Market |
| Quincy Point Fire Station |
| Quincy Police Station |
| Quincy Savings Bank |
| Quincy School |
| Quincy Shore Drive |
| Quincy Town Hall |
| Quincy Water Company Pumping Station |
| Quinepoxet River Bridge |
| Quinsigamond Branch Library |
| Quinsigamond Firehouse |
| Rabbit Hill Historic District |
| Race Point Light Station |
| Radding Building |
| Railroad Hotel |
| Railway Village Historic District |
| Ramsdell Public Library |
| Randall-Hale Homestead |
| Rawson, Warren, Building |
| Rawson, Warren, House |
| Raymond, Tilley, House |
| Reading Municipal Light and Power Station |
| Rea-Proctor Homestead |
| Record, Jonathan Dexter, House |
Data from United States Park Service and Wikidata
