This is a list of forts and camps in California, established by military, commercial and other interests.
| Name | Location | County | Date Founded | Date Abandoned | Founded by |
|---|---|---|---|---|---|
| Fort Alcatraz [1] | San Francisco Bay | San Francisco | November 6, 1850 | 1934 | United States Army |
| Camp Alert | Pioneer Race Course | San Francisco | 1862 | 1865 | Union Army |
| Fort Anderson | Redwood Creek | Humboldt | 1862 1864 | 1862 1866 | Union Army |
| Fort Baker | near Bridgeville | Humboldt | March 23, 1862 | November 1863 | Union Army |
| Lime Point Military Reservation Fort Baker Fort Barry Fort Cronkhite | Golden Gate National Recreation Area | Marin | 1850 1897 | 1897 2002 | United States |
| Bolsa Chica Military Reservation | Huntington Beach | Orange | 1942 | 1948? | United States |
| Benicia Arsenal [2] Benicia Barracks Benicia Quartermaster Depot | Benicia | Solano County | April 9, 1849 | 1964 | United States Army |
| Fort Bragg [3] [4] Camp Bragg | Fort Bragg | Mendocino | Summer 1857 | 1864 | United States Army |
| Camp Burlington [5] Camp Burlington-Humboldt Camp Stephens Grove Camp Dyerville | near Dyerville on the Eel River | Humboldt | 1933 | 1942 | Civilian Conservation Corps |
| Camp Cap Eele | |||||
| Drum Barracks Camp Drum | Wilmington | Los Angeles | 1861 | 1871 | Union Army |
| Fort Emory | Coronado | San Diego | 1942 | 1947 | United States Army |
| Cantonment Far West [6] Camp Far West Fort Far West | Marysville (Bear Creek) | Yuba | September 28, 1849 | May 4, 1852 | United States Army |
| Fort Funston | Lake Merced Military Reservation | San Francisco | 1939 | 1963 | United States Army |
| Fort Gaston | Hoopa Valley Indian Reservation | Humboldt | December 4, 1859 | June 29, 1892 | United States Army |
| Camp Grant [7] | near Dyerville on the Eel River | Humboldt | October 1863 | about 1865 | Union Army |
| Fort Humboldt | Eureka | Humboldt | 1853 | 1866 | United States Army |
| Fort Hunter Liggett | North of the San Luis Obispo County line, bounded by Pfeiffer Big State Park to the north | Monterey | 1940 | - | United States Army |
| Fort Iaqua | Iaqua | Humboldt | August 5, 1863 | 1866 | Union Army |
| Fort Irwin | near Barstow | San Bernardino | 1940 | United States Army | |
| Fort Jones | Fort Jones | Siskiyou | October 18, 1852 | June 23, 1858 | United States Army |
| Camp Lincoln | just west of Jedediah Smith Redwoods State Park | Del Norte County, California | September 1862 | 1870 | Union Army United States Army |
| Camp Low | San Juan Bautista | San Benito | 1864 | 1865 | Union Army |
| Fort MacArthur White Point Military Reservation | San Pedro | Los Angeles | 1888 | (Still in use) | United States Army |
| Fort McDowell | Angel Island | San Francisco | 1901 | 1962 | United States Army |
| Fort Miley Military Reservation | Point Lobos, San Francisco | San Francisco | 1898 | 1949 | United States Army |
| Camp Barbour [8] Camp Miller Fort Miller | Millerton Lake | Fresno | May 26, 1851 | December 1, 1866 | United States Army |
| Presidio of Monterey | Monterey | Monterey | 1768 | still in use by US | New Spain |
| New San Diego Depot San Diego Barracks | New San Diego | San Diego | 1850 April 5, 1879 | 1879 | United States Army |
| Camp No. 27 | |||||
| Fort Ord | Monterey | Monterey | 1917 | September, 1994 | United States Army |
| Camp NacimientoCamp Roberts | foothills of Santa Lucia Range, between Lake Nacimiento, Bradley, Valleton, and San Miguel | San Luis Obispo - Monterey | 1940 | - | United States Army |
| Fort Ross | Jenner | Sonoma | 1812 | 1841 | Russian-American Company |
| Fort Sacramento | |||||
| Presidio of San Diego | San Diego | San Diego | 1769 | 1835 | Spain |
| Presidio of San Francisco | San Francisco | San Francisco | 1776 | 1994 | Spain |
| Camp Merriam Camp San Luis Obispo | halfway between the cities of Morro Bay and San Luis Obispo | San Luis Obispo | 1928 | - | United States Army |
| Presidio of Santa Barbara | Santa Barbara | Santa Barbara | 1782 | 1846 | Spain |
| Fort Point | San Francisco | San Francisco | 1794 | 1970 | Spain |
| Fort Reading | Redding | Shasta | May 26, 1852 | April 6, 1870 | United States Army |
| Fort Rosecrans | San Diego | San Diego | 1852 | United States Army | |
| Fort Seward | Fort Seward | Humboldt | September 25, 1861 | April, 1862 | Union Army |
| Fort Tejon | Grapevine Canyon | Kern | June 24, 1854 | September 11, 1864 | United States Army |
| Fort Ter-Waw | Klamath Glen | Del Norte | October 12, 1857 | June 10, 1862 | United States Army |
| Camp Wessels | |||||
| Camp at Nome Cult Indian Agency Fort Wright Camp Wright | Round Valley Reservation | Mendocino | 1858 1862 1875 | 1861 1866 1875 | United States Army Union Army United States Army |
| Fort Winfield Scott | San Francisco | San Francisco | 1852 | 1995 | United States Army |
| Fort Yuma | across the Colorado River from Yuma, Arizona | Imperial | November 27, 1850 | 1885 | United States Army |