Massachusetts - Criteria: B (person)
| Norad Mill |
| Norcross Brothers Houses |
| Northampton State Hospital |
| Northside Village Historic District |
| Norwood-Hyatt House |
| Oak Grove Farm |
| Oak Knoll |
| Octagon House |
| Octagon House |
| Old Manse |
| Old Mill |
| Old Shephard Farm |
| Olmsted, Frederick Law, House, National Historic Site |
| Opposition House |
| Orchard House |
| Orlando |
| Orrock, Rev. John, House |
| Osgood Hill |
| Osgood, Samuel, House |
| Packard, Moses, House |
| Page, Thomas D., House |
| Paine, Robert Treat, Jr., House |
| Paine, Timothy, House |
| Parker, Capt. Nathaniel, Red House |
| Parker, Harrison, Sr., House |
| Parker, Samuel, House |
| Parker, Stillman, House |
| Parker Tavern |
| Parker, William, House |
| Parkman, Francis, House |
| Parsonage, The |
| Partridge, Jabez, Homestead |
| Peabody, George, House |
| Peak House |
| Pelham Town Hall Historic District |
| Penniman, Edward, House and Barn |
| Perkins Estate |
| Phipps Street Burying Ground |
| Pierce House |
| Pierce House |
| Pierce Organ Pipe Factory |
| Pierce, Peter, Store |
| Pill Hill Historic District |
| Pinkham, Lydia, House |
| Plimpton-Winter House |
| Plymouth Antiquarian House |
| Plymouth Village Historic District |
| Point Allerton Lifesaving Station |
| Porter-Phelps-Huntington House |
| Power, Charles Whittlesey, House |
| Pratt, Miles, House |
| Prentiss, Addison, House |
| Prescott Town House |
| Punchard, Benjamin House |
| Putnam, Gen. Israel, House |
| Putnam, Gen. Rufus, House |
| Quincy Homestead |
| Quincy, Josiah, House |
| Rea-Proctor Homestead |
| Red Top |
| Rehoboth Village Historic District |
| Republican Block |
| Revere, Paul, House |
| Richards, Ellen H. Swallow, House |
| Richardson, Joseph, House |
| Richards, Theodore W., House |
| Rider Tavern |
| Ritchie Building |
| Robinson, Capt. Joel, House |
| Rocks Village Historic District |
| Rocky Neck Historic District |
| Roebuck Tavern |
| Ross Farm |
| Rowhouses at 256-274 Haven Street |
| Ruggles, Draper, House |
| Rumford, Count, Birthplace |
| Rural Cemetery and Friends Cemetery |
| Russell, Charles, House |
| Russell Corner Historic District |
| Russell Garrison |
| Russells Mills Village Historic District |
| Sadler, Herbert A., House |
| Saint Augustine Chapel and Cemetery |
| Saint Mary of the Assumption Church, Rectory, School and Convent |
| Salisbury House |
| Salisbury Mansion and Store |
| Sanborn House |
| Sands, Ivory, House |
| Sandy Neck Cultural Resources District |
| Sanger, Richard, III, House |
| Sawin, Ezekiel, House |
| Sawyer Homestead |
| Schofield, James, House |
| Searles Castle |
| Shady Hill Historic District |
| Shaker Farm |
| Shattuck, Ralph W., House |
| Shepard, Thomas, House |
| Sherborn Center Historic District |
| Simond, Col. Benjamin, House |
Data from United States Park Service and Wikidata
