| Rock Creek Lake Group Camp (Inyo National Forest, CA) FS · group · Inyo National Forest · 9,720 ft | not published | — | 1 | none |
| Rock Creek Lake (Inyo National Forest, CA) FS · Inyo National Forest · 9,720 ft | not published | — | 26 | none |
| Rocky Rest FS · Tahoe National Forest · 2,334 ft | none | — | 10 | none · pull-through |
| Rose Valley Campground FS · Los Padres National Forest · 3,405 ft | none | — | 9 | none |
| Saddlebag Lake Trailhead Group Camp FS · group · Inyo National Forest · 10,128 ft | not published | — | 1 | none |
| Salt Creek Dispersed Area (CA) FS · Shasta-Trinity National Forest · 1,053 ft | not published | — | 21 | none |
| San Miguel Island NPS · tent-only · Channel Islands National Park · 494 ft | not published | — | 18 | none |
| Santa Barbara Island NPS · tent-only · Channel Islands National Park · 184 ft | not published | — | 20 | none |
| Santa Cruz Island Del Norte Backcountry NPS · tent-only · Channel Islands National Park · 704 ft | not published | — | 8 | none |
| Santa Cruz Island Scorpion NPS · tent-only · Channel Islands National Park · 21 ft | not published | — | 31 | none |
| Santa Rosa Island NPS · tent-only · Channel Islands National Park · 118 ft | not published | — | 15 | none |
| Santa Rosa Island Backcountry Beach Camping NPS · tent-only · Channel Islands National Park · 988 ft | not published | — | 33 | none |
| Sarah Totten Campground FS · Klamath National Forest · 1,531 ft | none | — | 11 | none |
| Sardine Peak Lookout FS · cabin · Tahoe National Forest · 8,143 ft | none | — | 1 | none |
| Shady Cove Group Campground FS · tent-only · San Bernardino National Forest · 7,322 ft | not published | — | 3 | water |
| Sheep Camp Primitive Campground NPS · tent-only · Whiskeytown National Recreation Ar · 1,805 ft | not published | — | 4 | none |
| Sheep Pass Group NPS · tent-only · Joshua Tree National Park · 4,559 ft | not published | — | 6 | none |
| Sierra FS · tent-only · Tahoe National Forest · 5,696 ft | not published | — | 16 | none |
| Silver Creek Group Campground FS · group · Eldorado National Forest · 5,345 ft | not published | — | 1 | none |
| Silver Lake Campground (Plumas National Forest, CA) FS · Plumas National Forest · 5,785 ft | not published | — | 9 | water |
| Skunk Point Group Campground FS · group · Shasta-Trinity National Forest · 1,293 ft | not published | — | 1 | none |
| Snake Lake Campground and Equestrian Camp FS · Plumas National Forest · 3,993 ft | none | — | 17 | water |
| Sonora Bridge FS · Humboldt-Toiyabe National Forest H · 6,700 ft | not published | — | 23 | water |
| Soquel Campground FS · Sierra National Forest · 5,263 ft | none | — | 21 | none |
| South Fork Campground - Mendocino National Forest FS · Mendocino National Forest · 1,575 ft | not published | — | 1 | none |
| Stoney Group Shasta-Trinity FS · group · Shasta-Trinity National Forest · 2,414 ft | not published | — | 1 | none |
| Summit Lake South NPS · Lassen Volcanic National Park · 6,686 ft | none | — | 45 | none · pull-through |
| Summit Lake Stock Corral NPS · group · Lassen Volcanic National Park · 6,799 ft | not published | — | 1 | none · pull-through |
| Sundew Campground (CA) FS · Plumas National Forest · 5,228 ft | not published | — | 21 | none |
| Table Mountain (Inyo) FS · group · Inyo National Forest · 8,828 ft | not published | — | 1 | none |
| Tamarack Flat Campground NPS · Yosemite National Park · 6,337 ft | none | — | 53 | water · pull-through |
| Tanglewood Group Camp FS · group · San Bernardino National Forest · 7,559 ft | not published | — | 1 | none |
| Tent Peg Group FS · group · San Bernardino National Forest · 5,740 ft | not published | — | 1 | none |
| Thunderbird Group Campground FS · Sequoia National Forest · 2,868 ft | not published | — | 3 | water · sewer |
| Trinity River (CA) FS · Shasta-Trinity National Forest · 2,571 ft | not published | — | 8 | none |
| Tuttle Creek Campground BLM · Alabama Hills · 5,063 ft | not published | — | 82 | none |
| Union West - Union Reservoir (Stanislaus NF) FS · Stanislaus National Forest · 6,871 ft | none | — | 17 | water |
| Van Vleck Bunkhouse FS · cabin · Eldorado National Forest · 6,514 ft | not published | — | 1 | none |
| Vermillion FS · tent-only · Sierra National Forest · 7,660 ft | not published | — | 30 | none |
| Wawona Horse Campsites NPS · Yosemite National Park · 3,981 ft | not published | — | 2 | none · pull-through |
| Wildcat Equestrian Area USACE · group · Eastman Lake · 735 ft | not published | — | 1 | water |
| Wild Horse Equestrian Family FS · San Bernardino National Forest · 6,871 ft | none | — | 11 | none · pull-through |
| Wishon Cabin FS · cabin · Sequoia National Forest · 3,882 ft | not published | — | 1 | none |
| Wrights Lake Equestrian Campground FS · Eldorado National Forest · 6,953 ft | not published | — | 15 | none |
| Yosemite Creek Campground NPS · Yosemite National Park · 7,218 ft | none | — | 74 | water |