California - Significance region: National
| Gamble House |
| Giannini Hall |
| Golden Gate National Cemetery |
| Golden Gate Park |
| Gold Ridge Farm |
| Gonzalez, Rafael, House |
| Green Gables-Fleischhacker, Mortimer, Country House |
| Gunther Island Site 67 |
| Hale Solar Laboratory |
| Hangar One |
| Hanna-Honeycomb House |
| Harada House |
| Harmony Borax Works |
| Hearst Greek Theatre |
| Hearst Gymnasium for Women |
| Hearst Memorial Mining Building |
| Hearst San Simeon Estate |
| Heinsbergen Decorating Company Building |
| HERCULES (tugboat) |
| Herschell, Allan, 3-Abreast Carousel |
| Hewlett-Packard House and Garage |
| Hilgard Hall |
| Hollywood Boulevard Commercial and Entertainment District |
| Hoover, Lou Henry, House |
| Hospital Rock Army Camp Site |
| Hotel Del Coronado |
| Hubble, Edwin, House |
| Humboldt Bay Life-Saving Station |
| Jardinette Apartments |
| Jeffers, Robinson, House |
| John Muir National Historic Site |
| J Street Wreck |
| Kennedy Tailing Wheels |
| Kimberly Crest |
| Knight's Ferry Bridge |
| Kotani-En Garden |
| Lake Merritt Wild Duck Refuge |
| Lake Tahoe Dam |
| LANE VICTORY |
| La PurÃsima Mission |
| Larkin House |
| Las Flores Adobe |
| Las Flores Estancia |
| Las Flores Site |
| Lava Beds National Monument Archeological District |
| LeConte Hall |
| LeConte Memorial Lodge |
| Liberty Hall |
| Lighter-than-Air Ship Hangars |
| Lightship WAL-605, RELIEF |
| Lloyd, Harold, Estate |
| Locke Historic District |
| London, Jack, Ranch |
| Looff Carousel and Roller Coaster on the Santa Cruz Beach Boardwalk |
| Los Alamos Ranch House |
| Los Angeles Harbor Light Station |
| Los Angeles Memorial Coliseum |
| Los Angeles Union Passenger Terminal |
| Los Cerritos Ranch House |
| Lovell Beach House |
| Lower Klamath National Wildlife Refuge |
| Madulce Guard Station and Site |
| Maloof, Sam and Alfreda, Compound |
| Manzanar War Relocation Center, National Historic Site |
| Marconi-RCA Bolinas Transmitting Station |
| Mare Island Naval Shipyard |
| Marin County Civic Center |
| McCrea, Joel, Ranch |
| Mendocino Woodlands Recreational Demonstration Area |
| Millard House |
| Milpitas Ranchhouse |
| Mission Beach Roller Coaster |
| Mission Dolores |
| Mission Inn |
| Mission Santa Ines |
| Modjeska House |
| Mojave Road |
| MONTEBELLO (shipwreck and remains) |
| Monterey County Jail |
| Monterey Old Town Historic District |
| Muir, John, Memorial Shelter |
| Muir Woods National Monument |
| NASA Ames Wind Tunnel Historic District |
| National Farm Workers Association Headquarters |
| Naval Air Station, San Diego, Historic District |
| Naval Training Station |
| Neutra, Richard and Dion, VDL Research House II |
| New Almaden |
| NIANTIC (Storeship) |
| Nixon, Richard, Birthplace |
| NORLINA (shipwreck and remains) |
| Norris, Frank, Cabin |
| North Gate Hall |
| Nuestra Senora Reina de la Paz |
| Oak Grove Butterfield Stage Station |
| Old Mission Dam |
| Old Sacramento Historic District |
| Old U.S. Mint |
| Pacific Biological Laboratories |
| Paramount Theatre |
Data from United States Park Service and Wikidata
