California - Significance region: National
| Park Place-Arroyo Terrace Historic District |
| Parsons Memorial Lodge |
| Pasadena Civic Center District |
| Pasadena Playhouse |
| Patsiata Tübiji Nüümü-na Awaedu Ananisudüheina (Patsiata Historic District) |
| People’s Park |
| Petaluma Adobe |
| Pigeon Point Lighthouse |
| Pioneer Deep Space Station |
| Pioneer Woolen Mills and D. Ghirardelli Company |
| Point Conception Light Station |
| Point Pinos Lighthouse |
| Point Reyes Lifeboat Rescue Station, 1927 |
| Pond Farm Pottery Historic District |
| Pony Express Terminal |
| Port Chicago Naval Magazine National Memorial |
| Port of San Francisco Embarcadero Historic District |
| Pratt, Charles M., House |
| Presidio |
| RALPH J. SCOTT |
| Ralston, William C., House |
| Rancho Camulos |
| Rancho Guajome Adobe |
| Rangers' Club |
| RCA Point Reyes Receiving Station |
| Richmond Shipyard Number Three |
| Rincon Annex |
| RMS QUEEN MARY |
| Rogers Dry Lake |
| Rogers, Will, House |
| Room 307, Gilman Hall, University of California |
| Rose Bowl, The |
| Round Valley Flour Mills |
| Royal Presidio Chapel |
| Sacramento Air Depot Historic District |
| Sacramento Shops Historic District |
| San Antonio de Padua Mission |
| San Diego Fire Department Shops at Station 6 |
| San Diego Mission Church |
| San Diego Presidio |
| San Francisco Bay Discovery Site |
| San Francisco Cable Cars |
| San Francisco Civic Center Historic District |
| San Francisco-Oakland Bay Bridge |
| San Francisco Port of Embarkation, US Army |
| San Juan Bautista Plaza Historic District |
| San Luis Rey Mission Church |
| Santa Barbara Mission |
| Santa Cruz Island Archeological District |
| Santa Margarita Ranchhouse |
| Santa Monica Looff Hippodrome |
| Santa Rosa Island Archeological District |
| Sather Gate and Bridge |
| Sather Tower |
| Scripps, George H., Memorial Marine Biological Laboratory |
| Sierra Railway Shops Historic District |
| Sinclair, Upton, House |
| Sonoma Plaza |
| South Hall |
| Southwest Lake Cahuilla Recessional Shoreline Archeological District |
| Southwest Museum |
| Space Flight Operations Facility |
| Space Launch Complex 10 |
| Spillman Engineering 3-Abreast Carousel |
| Squaw Spring Archeological District |
| SS JEREMIAH O'BRIEN |
| SS POMONA (Shipwreck) |
| SS Red Oak Victory (victory ship) |
| SS RIO DE JANEIRO Shipwreck |
| SS YANKEE BLADE |
| STAMBOUL (Whaling Bark) |
| Stanford-Lathrop House |
| STAR OF INDIA |
| Station KPH Operating Station |
| Steinbeck, John, House |
| Stevenson House |
| Stonehead (L-7) |
| Sutter's Fort |
| Swedenborgian Church |
| Tao House |
| The Forty Acres |
| Thomas-Wright Battle Site |
| Torrey Pines Gliderport |
| Tule Lake Segregation Center |
| Tuna Club of Avalon |
| Twenty-Five Foot Space Simulator |
| Union Ferry Depot |
| Union Iron Works Historic District |
| Unitary Plan Wind Tunnel |
| University House |
| USCGC MCCULLOCH (coast guard cutter) Shipwreck |
| USCGC STORIS (cutter) |
| US Court House and Post Office |
| U.S. Customhouse |
| US Inspection Station-Calexico |
| US Inspection Station-Tecate |
| US Mint |
| US Naval Air Station Sunnyvale, California, Historic District |
| US Post Main Office-San Mateo |
| U.S. Post Office and Courthouse |
Data from United States Park Service and Wikidata
