Washington - Significance region: Local
| Patton Bridge |
| Peaceful Valley Historic District |
| Pearson, D. O., House |
| Pearson House |
| Pend Oreille County Courthouse |
| Pend Oreille Mines and Metals Building |
| Pennsylvania Avenue-West Side Historic District |
| Perkins Building |
| Perrin, Winfield, House |
| Perry Creek Shelter |
| Petersen, H. S., House |
| Pettygrove, Benjamin S., House |
| Peyton Building and Peyton Annex |
| Phillips, Dr. John and Viola, House and Office |
| Phillips House |
| Pickering Farm |
| Pietrzycki, Dr. Marcel, House |
| Pike Place Public Market Historic District |
| Piollet, Victor & Jean, House |
| Pioneer Church |
| Pioneer Hall |
| Pioneer Square-Skid Road District |
| PIRATE (R-Class Sloop) |
| Point Defiance Lodge |
| Point Defiance Streetcar Station |
| Point Elliott Treaty Monument |
| Pomeroy Farm |
| Port Angeles Civic Historic District |
| Port Stanley School |
| Port Townsend Carnegie Library |
| Post Office and Federal Office Building |
| Potter, H. W., House |
| Pounder Building |
| Powell House |
| President Hotel |
| Preston Community Clubhouse |
| Preston Hall |
| Pullman High School |
| Purple Point-Stehekin Ranger Station House |
| Puyallup Fish Hatchery |
| Pythian Temple |
| Queen Anne Club |
| Queen Anne High School |
| Queen Anne Public School |
| Quilcene Ranger Station |
| Radio Station KGY |
| Rainier School |
| Ralston, John and Mary, House |
| Ralston, Judge, House |
| Ravenna-Cowen North Historic District |
| Raymond Public Library |
| Raymond Theater |
| Rector Hotel |
| Redelsheimer-Ostrander House |
| Red Men Hall |
| Redmond City Park |
| Reiman, Samuel and Katherine, House |
| Reinhart-Young House |
| Rhodes, Henry A. and Birdella, House |
| Rhodesleigh |
| Rialto Theater |
| Rice, L. N., House |
| Richardson-Jackson House |
| Richey, James, House |
| Rickey Block |
| Ridpath Hotel |
| Ritzville Carnegie Library |
| Ritzville High School |
| Ritzville Historic District |
| Roanoke Park Historic District |
| Robinwood Aparments |
| Rochester Elementary School |
| Rock Cabin |
| Rockwood Historic District |
| Roeder, Victor A., House |
| Roffler, John, House |
| Rogers, John R., High School |
| Ronald, Judge James T., House |
| Roosevelt Apartments |
| Roosevelt Hall |
| Rosebush House |
| Rosedell |
| Rover, Hanna, House |
| Ruby Theater |
| Rucker Hill Historic District |
| Rucker House |
| Rudkin, Frank, House |
| Russell House |
| Ryan House |
| Sacajawea State Park |
| Saint Mary's Mission |
| Saint's Rest, Tukey's Pioneer Cabin and Homestead House |
| Salmon la Sac Guard Station |
| Salsich Lumber Company Superintendent's House |
| Salvation Army Building |
| Sandberg-Schoenfeld Buildings |
| Sanders, Erick Gustave, Mansion |
| SAND MAN (Tug Boat) |
| Sanitary Meat Market |
| San Juan County Courthouse |
Data from United States Park Service and Wikidata
