California - Significance region: Local
| Geary Theatre |
| Geilfuss, Henry, House |
| General Petroleum Building |
| Generals' Highway Stone Bridges |
| Geneva Office Building and Power House |
| Georgetown Civil War Armory |
| Georgia Street Bridge-Caltrans Bridge |
| Gerry Building |
| Getchell, O. W., House |
| Gew, Wong K., Mansion |
| Geyserville Union School |
| Gianella Bridge |
| Gibb, Daniel, & Co. Warehouse |
| Gibson, William B., House |
| Gil, Jose Mario, Adobe |
| Gill, Merwyn C., House |
| Gillmore, E. P. and Clara, House |
| Gilman Ranch |
| Gilroy Free Library |
| Gilroy Southern Pacific Railroad Depot |
| Gilroy Yamato Hot Springs |
| Ginty, John, House |
| Girls Club |
| Glacier Point Trailside Museum |
| Glassell Park Elementary School |
| Glen Aulin High Sierra Camp |
| Glen Canyon Covered Bridge |
| Glendale Southern Pacific Railroad Depot |
| Glendale Young Men's Christian Association |
| Glen Oaks Ranch |
| Glen Park BART Station |
| Glen Tavern Hotel |
| Glide Memorial Church |
| Goethe House |
| Goffs Schoolhouse |
| Gold Dredge |
| Golden Gate Park Conservatory |
| Golden Gate Theater |
| Golden Sheaf Bakery |
| Golden State Mutual Life Insurance Building |
| Goldschmidt House |
| Goleta Depot |
| Goodman Building |
| Goodman, George E., Jr., House |
| Goodman, George E., Mansion |
| Goodman Library |
| Gordon Building |
| Gosby House Inn |
| Gould-Shaw House |
| Government Holes |
| Grace Episcopal Church |
| Granada Shoppes and Studios |
| Grand Boulevard Historic District |
| Grand-Horton Hotel |
| Grand Island Shrine |
| Grand Union Hotel |
| Granger Hall |
| Grant, U.S. Hotel |
| Grass Valley Public Library |
| Great Sierra Mine Historic Site |
| Great Sierra Wagon Road |
| Greek Orthodox Church of the Assumption |
| Green Gables |
| Green Hotel |
| Greenmeadow |
| Green Oaks Ranch House |
| Green-Rankin-Bembridge House |
| Green Shutter Hotel |
| Greenwood, Barbara, Kindergarten |
| Grether and Grether Building |
| Griffith, Edward and America, House |
| Griswold House |
| Grizzly Bluff School |
| Groenfeldt Site |
| Groezinger Wine Cellars |
| Groshon, Sid, House |
| Gross, Courtlandt, House |
| Guaranty Building |
| Guerneville Bridge |
| Gushaw-Mudgett House |
| Guthrie House |
| Haas Candy Factory |
| Haas-Lilienthal House |
| Hacienda Arms Apartments |
| Hackberry Corral |
| Hackett, Edward Alexander Kelley, House |
| Hackett House |
| Hafley, Olan G. and Aida T., House |
| Hagemann Ranch Historic District |
| Hakone Historic District |
| Halcyon Historic District |
| Hale Brothers Department Store |
| Hale House |
| Half Dome Cables and Trail |
| Halifax Apartments |
| Hallidie Building |
| Haman House |
| Hamilton Army Air Field Discontiguous Historic District |
| Hamilton, Capt. James A., House |
| Hammond's Estate Site |
Data from United States Park Service and Wikidata
