| Nom du Parc | Etat/Ville | Type du Parc |
| Sagamore Hill National Historic Site | New York (Oyster Bay) | National Historic Site |
| Saguaro National Park | Arizona (Tucson) | National Park |
| Saint Croix Island International Historic Site | Maine (Calais) | International Historic Site |
| Saint Croix National Scenic River | Wisconsin (Saint Croix Falls) | National Scenic River |
| Saint Paul's Church National Historic Site | New York (Mount Vernon, NY - 897 South Columbus Avenue) | National Historic Site |
| Saint-Gaudens National Historic Site | New Hampshire (Cornish) | National Historic Site |
| Salem Maritime National Historic Site | Massachusetts (Salem) | National Historic Site |
| Salinas Pueblo Missions National Monument | Nouveau Mexique (Mountainair) | National Monument |
| Salt River Bay National Historic Park and Ecological Preserve | Vermont (Christiansted) | National Historic Park and Ecological Preserve |
| San Antonio Missions National Historical Park | Texas (San Antonio) | National Historical Park |
| San Francisco Maritime National Historical Park | Californie (San Francisco) | National Historical Park |
| San Juan Island National Historical Park | Washington (Friday Harbor) | National Historical Park |
| San Juan National Historic Site | (San Juan) | National Historic Site |
| Sand Creek Massacre National Historic Site | Colorado (Kiowa County) | National Historic Site |
| Santa Fe National Historic Trail | Nouveau Mexique (Du Colorado à l'Oklahoma) | National Historic Trail |
| Santa Monica Mountains National Recreation Area | Californie (Thousand Oaks) | National Recreation Area |
| Saratoga National Historical Park | New York (Stillwater) | National Historical Park |
| Saugus Iron Works National Historic Site | Massachusetts (Saugus) | National Historic Site |
| Scotts Bluff National Monument | Nebraska (Gering) | National Monument |
| Selma To Montgomery National Historic Trail | Alabama (Montgomery, Lowndes & Dallas Counties) | National Historic Trail |
| Sequoia National Park Kings Canyon National Park | Californie (Three Rivers) | National Park |
| Sewall-Belmont House National Historic Site | Columbia (district) (Washington) | National Historic Site |
| Shenandoah National Park | Virginie (The Blue Ridge Mountains près de Luray) | National Park |
| Shiloh National Cemetery | Tennessee (National Cemetery) | National Cemetery |
| Shiloh National Military Park | Tennessee (Shiloh) | National Military Park |
| Sitka National Historical Park | Alaska (Sitka) | National Historical Park |
| Sleeping Bear Dunes National Lakeshore | Michigan (Empire) | National Lakeshore |
| Slide Rock State Park | Arizona (Sedona) | State Park |
| Snow Canyon State Park | Utah (Ivins) | State Park |
| Springfield Armory National Historic Site | Massachusetts (Springfield) | National Historic Site |
| Statue Of Liberty National Monument | New York (New York) | National Monument |
| Steamtown National Historic Site | Pennsylvanie (Scranton) | National Historic Site |
| Stones River National Battlefield | Tennessee (Murfreesboro) | National Battlefield |
| Stones River National Cemetery | Tennessee (Murfreesboro) | National Cemetery |
| Suitland Parkway | Maryland (Prince Georges County) | Parkway |
| Sunset Crater Volcano National Monument | Arizona (Flagstaff) | National Monument |
