Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Los Pitos (historical) | Populated Place | 8 | Ventura | 34 19 07 N | 119 23 18 W |
| Los Posas Country Club | Locale | 102 | Ventura | 34 15 02 N | 119 04 18 W |
| Los Prados Park | Park | 2 | San Mateo | 37 32 31 N | 122 16 56 W |
| Los Prados Shopping Center | Locale | 2 | San Mateo | 37 32 41 N | 122 17 06 W |
| Los Prietos Boys Camp | Locale | 303 | Santa Barbara | 34 32 45 N | 119 46 45 W |
| Los Prietos Campground | Locale | 309 | Santa Barbara | 34 32 26 N | 119 48 07 W |
| Los Prietos Campground | Locale | 319 | Santa Barbara | 34 32 25 N | 119 47 56 W |
| Los Prietos Ranger Station | Locale | 330 | Santa Barbara | 34 32 32 N | 119 47 09 W |
| Los Prietos Y Najalayegua | Civil | 737 | Santa Barbara | 34 32 05 N | 119 38 55 W |
| Los Primeros Structured School | School | 55 | Ventura | 34 12 58 N | 119 02 25 W |
| Los Puertecitos Historical Marker | Park | 50 | San Diego | 33 08 23 N | 116 06 17 W |
| Los Putos | Civil | 43 | Solano | 38 23 25 N | 121 57 60 W |
| Los Ranchitos | Populated Place | 19 | Marin | 37 59 35 N | 122 32 33 W |
| Los Ranchitos | Populated Place | 319 | Riverside | 33 29 00 N | 117 08 03 W |
| Los Ranchos Elementary School | School | 73 | San Luis Obispo | 35 13 11 N | 120 37 16 W |
| Los Rasalies Ravine | Valley | | San Diego | 32 52 25 N | 116 27 55 W |
| Los Rio Street Historic District | Park | 33 | Orange | 33 30 05 N | 117 39 51 W |
| Los Robles County Park | Park | 133 | Los Angeles | 34 00 34 N | 117 59 10 W |
| Los Robles Elementary School | School | 135 | Los Angeles | 34 00 36 N | 117 59 17 W |
| Los Robles Elementary School | School | 139 | Tulare | 36 05 03 N | 119 00 23 W |
| Los Robles Greens Country Club | Locale | 225 | Ventura | 34 10 31 N | 118 52 43 W |
| Los Robles Mobile Home Park (subdivision) | Populated Place | 9 | Orange | 33 46 20 N | 118 01 33 W |
| Los Robles Open Space | Park | 376 | Ventura | 34 09 50 N | 118 52 47 W |
| Los Robles Park | Park | 62 | Santa Barbara | 34 26 49 N | 119 45 21 W |
| Los Robles Ranch | Locale | 1013 | Los Angeles | 34 35 20 N | 118 20 29 W |
| Los Robles Regional Medical Center | Hospital | 235 | Ventura | 34 12 27 N | 118 52 54 W |
| Los Robles Regional Medical Center Heliport | Airport | 233 | Ventura | 34 12 27 N | 118 52 59 W |
| Los Robles Regional Medical Center Medical Staff Library | Building | 235 | Ventura | 34 12 27 N | 118 52 54 W |
| Los Sauces Creek | Stream | | Ventura | 34 20 54 N | 119 25 20 W |
| Los Serranos | Populated Place | 204 | San Bernardino | 33 58 22 N | 117 42 29 W |
| Los Serranos Country Club | Locale | 193 | San Bernardino | 33 58 10 N | 117 42 03 W |
| Los Serranos Elementary School | School | 221 | San Bernardino | 33 58 09 N | 117 42 56 W |
| Los Terrenitos | Populated Place | 1001 | San Diego | 32 50 05 N | 116 37 19 W |
| Los Trancas Open Space Preserve | Park | 593 | Santa Clara | 37 19 55 N | 122 10 22 W |
| Los Trancos Canyon | Valley | | Orange | 33 34 25 N | 117 50 25 W |
| Los Trancos Creek | Stream | | San Mateo | 37 24 50 N | 122 11 30 W |
| Los Trancos Woods | Populated Place | 289 | San Mateo | 37 20 58 N | 122 11 58 W |
| Los Tularcitos | Civil | 608 | Monterey | 36 25 55 N | 121 35 33 W |
| Los Tules | Populated Place | 1021 | San Diego | 33 17 00 N | 116 37 16 W |
| Los Ulpinos | Civil | 16 | Solano | 38 08 47 N | 121 42 45 W |
| Los Vallecitos | Valley | 155 | San Diego | 33 07 13 N | 117 12 21 W |
| Los Vallecitos De San Marcos | Civil | 180 | San Diego | 33 08 16 N | 117 09 31 W |
| Los Vaqueros Group Camp | Locale | 1452 | San Diego | 32 58 05 N | 116 33 32 W |
| Los Verdes Golf Course | Locale | 199 | Los Angeles | 33 45 15 N | 118 24 02 W |
| Los Verdes Montessori School | School | 36 | San Luis Obispo | 35 14 31 N | 120 40 38 W |
| Los Verdes Park | Park | 197 | Los Angeles | 33 45 03 N | 118 23 39 W |
| Los Vergeles | Civil | 176 | Monterey | 36 47 56 N | 121 34 15 W |
| Los Verjeles Dam | Dam | 436 | Yuba | 39 22 06 N | 121 17 02 W |
| Los Viejos | Range | 185 | Kings | 35 57 02 N | 119 57 04 W |
| Loscal Gun Club (historical) | Locale | 67 | Kern | 35 42 33 N | 119 30 13 W |
| Lost Arrow | Pillar | 2029 | Mariposa | 37 45 23 N | 119 35 39 W |
| Lost Bear Meadow | Flat | 2160 | Mariposa | 37 38 57 N | 119 35 56 W |
| Lost Burro Gap | Gap | 1425 | Inyo | 36 44 41 N | 117 30 53 W |
| Lost Burro Mine | Mine | 1650 | Inyo | 36 43 26 N | 117 31 18 W |
| Lost Cabin Creek | Stream | | Mendocino | 39 56 24 N | 123 16 19 W |
| Lost Cabin Mine | Mine | 2608 | Alpine | 38 40 57 N | 120 00 52 W |
| Lost Cabin Mine | Mine | 1514 | Modoc | 41 21 30 N | 120 56 34 W |
| Lost Cabin Spring | Spring | 1982 | Inyo | 36 08 43 N | 117 41 56 W |
| Lost Cabin Spring | Spring | 1430 | Plumas | 39 51 23 N | 120 52 43 W |
| Lost Camp (historical) | Locale | 1241 | Tehama | 40 11 13 N | 121 38 49 W |
| Lost Camp Mine | Mine | 1298 | Placer | 39 14 20 N | 120 42 54 W |
| Lost Camp Ranger Station (historical) | Locale | 1255 | Tehama | 40 11 15 N | 121 38 44 W |
| Lost Camp Ridge | Ridge | 1652 | Glenn | 39 31 54 N | 122 41 15 W |
| Lost Cannon Creek | Stream | | Mono | 38 29 36 N | 119 28 55 W |
| Lost Cannon Peak | Summit | 3355 | Mono | 38 24 21 N | 119 32 55 W |
| Lost Canyon | Valley | | Fresno | 36 56 25 N | 118 43 13 W |
| Lost Canyon | Valley | | Fresno | 37 02 20 N | 118 58 30 W |
| Lost Canyon | Valley | | Humboldt | 40 19 42 N | 123 35 13 W |
| Lost Canyon | Valley | | Kern | 34 55 59 N | 119 05 22 W |
| Lost Canyon | Valley | | Los Angeles | 34 16 20 N | 117 50 44 W |
| Lost Canyon | Valley | | Placer | 39 07 33 N | 120 36 26 W |
| Lost Canyon | Valley | | Santa Clara | 37 22 56 N | 121 30 39 W |
| Lost Canyon | Valley | | Tulare | 36 27 35 N | 118 28 25 W |
| Lost Canyon Creek | Stream | | El Dorado | 38 51 09 N | 120 38 39 W |
| Lost Canyon Creek | Stream | | Tulare | 36 27 38 N | 118 28 18 W |
| Lost Canyon Trail (historical) | Trail | 1859 | Mono | 38 30 04 N | 119 30 03 W |
| Lost City | Populated Place | 320 | Calaveras | 38 05 12 N | 120 44 59 W |
| Lost Claim Camp Ground | Locale | 914 | Tuolumne | 37 49 16 N | 120 02 55 W |
| Lost Corner Mountain | Summit | 2516 | El Dorado | 39 00 49 N | 120 12 15 W |
| Lost Cove Picnic Area | Locale | 1537 | Plumas | 40 10 57 N | 120 35 38 W |
| Lost Creek | Stream | | Butte | 39 33 49 N | 121 11 21 W |
| Lost Creek | Stream | | Fresno | 37 00 19 N | 119 13 10 W |
| Lost Creek | Stream | | Mendocino | 38 55 11 N | 123 17 27 W |
| Lost Creek | Stream | | Plumas | 40 11 32 N | 120 35 43 W |
| Lost Creek | Stream | | San Bernardino | 34 10 09 N | 116 49 29 W |
| Lost Creek | Stream | | San Bernardino | 34 14 44 N | 117 36 40 W |
| Lost Creek | Stream | | Shasta | 40 37 02 N | 121 28 06 W |
| Lost Creek | Stream | | Shasta | 40 48 55 N | 121 27 28 W |
| Lost Creek | Stream | | Shasta | 41 09 35 N | 122 06 01 W |
| Lost Creek | Stream | | Tehama | 40 15 33 N | 121 22 36 W |
| Lost Creek | Stream | | Trinity | 40 07 22 N | 123 10 55 W |
| Lost Creek | Stream | | Tulare | 36 03 40 N | 118 07 56 W |
| Lost Creek | Stream | | Tuolumne | 38 01 51 N | 119 59 48 W |
| Lost Creek | Stream | | Yuba | 39 30 42 N | 121 07 43 W |
| Lost Creek 63-002 Dam | Dam | 1001 | Butte | 39 34 30 N | 121 08 10 W |
| Lost Creek Camp | Locale | 1709 | Shasta | 40 33 46 N | 121 31 06 W |
| Lost Creek Diversion Flume | Canal | 1819 | Shasta | 40 33 09 N | 121 30 55 W |
| Lost Creek Maintenance Station | Locale | 1500 | Tehama | 40 15 41 N | 121 21 19 W |
| Lost Creek Organization Campground | Locale | 1715 | Shasta | 40 33 41 N | 121 31 04 W |
| Lost Creek Plateau | Plain | 1744 | Tehama | 40 18 40 N | 121 24 15 W |
| Lost Creek Reservoir | Reservoir | 1002 | Butte | 39 34 31 N | 121 08 13 W |
| Lost Creek Spring | Spring | 1585 | Tehama | 40 18 25 N | 121 22 22 W |
| Lost Dog Lake | Lake | 2893 | Madera | 37 38 20 N | 119 07 06 W |
| Lost Emigrant Mine | Mine | 1963 | Placer | 39 12 15 N | 120 25 43 W |
| Lost Grove | Woods | 2028 | Tulare | 36 39 04 N | 118 49 39 W |
| Lost Heads Ranch | Locale | 434 | Riverside | 33 59 32 N | 116 31 27 W |
| Lost Hill | Summit | 1573 | Modoc | 41 42 30 N | 120 33 24 W |
| Lost Hills | Populated Place | 93 | Kern | 35 36 59 N | 119 41 39 W |
| Lost Hills | Range | 129 | Kern | 35 38 04 N | 119 44 49 W |
| Lost Hills Airport | Airport | 85 | Kern | 35 37 24 N | 119 41 13 W |