right|150px|National Park Service logo Het National Park System van de Verenigde Staten is de verzameling van eigendommen in het bezit of in beheer door de National Park Service, een federaal agentschap onder het ministerie van Binnenlandse Zaken dat bevoegd is met het beheer van die eigendommen. De bekendste gebieden in het National Park System zijn de nationale parken en monumenten. Daarnaast bestaan er verschillende andere types; zie National Park Service voor een schematisch overzicht.
Sinds 2011 zijn er 397 "eenheden" in het National Park System. Dit aantal is echter wat misleidend. Zo wordt Denali National Park and Preserve als twee eenheden geteld, daar waar het Fort Moultrie National Monument niet als een eenheid telt omdat het als onderdeel van het Fort Sumter National Monument gezien wordt.
De National Park Service levert ook technische en financiële steun aan verschillende "affiliated areas" die als dusdanig erkend zijn door het Amerikaans Congres. Ten slotte valt ook het National Register of Historic Places, de monumentenlijst van de federale overheid, onder het beheer van de National Park Service. Alle eenheden in het National Park System worden automatisch opgenomen in die lijst.
Nationale parken
Nationale monumenten
National Preserves thumb|right|Little River Canyon National Preserve NaamLocatie Aniakchak National Monument and Preserve Alaska Bering Land Bridge National Preserve Alaska Big Cypress National Preserve Florida Big Thicket National Preserve Texas Craters of the Moon National Monument and Preserve Idaho Denali National Park and Preserve Alaska Gates of the Arctic National Park and Preserve Alaska Glacier Bay National Park and Preserve Alaska Great Sand Dunes National Park and Preserve Colorado Jean Lafitte National Historical Park and Preserve Louisiana Katmai National Park and Preserve Alaska Lake Clark National Park and Preserve Alaska Little River Canyon National Preserve Alabama Mojave National Preserve Californië Noatak National Preserve Alaska Salt River Bay National Historical Park and Ecological Preserve Amerikaanse Maagdeneilanden Tallgrass Prairie National Preserve Kansas Timucuan Ecological and Historic Preserve Florida Yukon-Charley Rivers National Preserve Alaska Wrangell-St. Elias National Park and Preserve Alaska
National Historical Parks NaamLocatie Adams National Historical Park Massachusetts Appomattox Court House National Historical Park Virginia Boston National Historical Park Massachusetts Cane River Creole National Historical Park Louisiana Cedar Creek and Belle Grove National Historical Park Virginia Chaco Culture National Historical Park New Mexico Chesapeake and Ohio Canal National Historical Park Maryland Colonial National Historical Park Cape Henry Memorial Colonial Parkway Jamestown National Historic Site (affiliated area) Yorktown Battlefield Yorktown National Cemetery Virginia Cumberland Gap National Historical Park Kentucky, Tennessee, Virginia Dayton Aviation Heritage National Historical Park Ohio George Rogers Clark National Historical Park Indiana Harpers Ferry National Historical Park West Virginia Hopewell Culture National Historical Park Pennsylvania Independence National Historical Park Benjamin Franklin National Memorial (affiliated area) Deshler-Morris House Gloria Dei (Old Swedes') Church National Historic Site (affiliated area) Independence Hall National Constitution Center Thaddeus Kosciuszko National Memorial Pennsylvania Jean Lafitte National Historical Park and Preserve Chalmette National Cemetery Louisiana Kalaupapa National Historical Park Hawaï Kaloko-Honokohau National Historical Park Hawaï Keweenaw National Historical Park Michigan Klondike Gold Rush National Historical Park Alaska, Washington Lewis and Clark National and State Historical Parks Fort Clatsop Oregon, Washington Lowell National Historical Park Massachusetts Lyndon B. Johnson National Historical Park Texas Marsh-Billings-Rockefeller National Historical Park Vermont Minute Man National Historical Park Massachusetts Morristown National Historical Park New Jersey Natchez National Historical Park Mississippi New Bedford Whaling National Historical Park Massachusetts New Orleans Jazz National Historical Park Louisiana Nez Perce National Historical Park Idaho Pecos National Historical Park New Mexico Pu'uhonua O Honaunau National Historical Park Hawaï Rosie the Riveter/World War II Home Front National Historical Park Californië Salt River Bay National Historical Park and Ecological Preserve Amerikaanse Maagdeneilanden San Antonio Missions National Historical Park Texas San Francisco Maritime National Historical Park Californië San Juan Island National Historical Park Washington Saratoga National Historical Park New York Sitka National Historical Park Alaska Tumacácori National Historical Park Arizona Valley Forge National Historical Park Pennsylvania War in the Pacific National Historical Park Guam Women's Rights National Historical Park New York
National Historic Sites NaamLocatie Abraham Lincoln Birthplace National Historic Site Kentucky Aleutian World War II National Historic Area (affiliated area) Alaska Allegheny Portage Railroad National Historic Site Pennsylvania Andersonville National Historic Site Andersonville National Cemetery Georgia Andrew Johnson National Historic Site Andrew Johnson National Cemetery Tennessee Bent's Old Fort National Historic Site Colorado Boston African American National Historic Site Massachusetts Brown v. Board of Education National Historic Site Kansas Historic Camden Revolutionary War Site (affiliated area) South Carolina Carl Sandburg Home National Historic Site North Carolina Carter G. Woodson Home National Historic Site Washington D.C. Charles Pinckney National Historic Site South Carolina Chicago Portage National Historic Site (affiliated area) Illinois Chimney Rock National Historic Site (affiliated area) Nebraska Christiansted National Historic Site Amerikaanse Maagdeneilanden Clara Barton National Historic Site Maryland Edgar Allan Poe National Historic Site Pennsylvania Edison National Historic Site Pennsylvania Eisenhower National Historic Site Pennsylvania Eleanor Roosevelt National Historic Site New York Eugene O'Neill National Historic Site Californië First Ladies National Historic Site Ohio Ford's Theatre National Historic Site Washington D.C. Fort Bowie National Historic Site Arizona Fort Davis National Historic Site Texas Fort Laramie National Historic Site Wyoming Fort Larned National Historic Site Kansas Fort Point National Historic Site Californië Fort Raleigh National Historic Site North Carolina Fort Scott National Historic Site Kansas Fort Smith National Historic Site Arkansas Fort Union Trading Post National Historic Site North Dakota Fort Vancouver National Historic Site Washington Frederick Douglass National Historic Site Washington D.C. Frederick Law Olmsted National Historic Site Massachusetts Friendship Hill National Historic Site Pennsylvania Gloria Dei (Old Swedes') Church National Historic Site (affiliated area) Pennsylvania Golden Spike National Historic Site Utah Grant-Kohrs Ranch National Historic Site Montana Hampton National Historic Site Maryland Harry S Truman National Historic Site Missouri Herbert Hoover National Historic Site Iowa Home of Franklin D. Roosevelt National Historic Site New York Hopewell Furnace National Historic Site Pennsylvania Hubbell Trading Post National Historic Site Arizona James A. Garfield National Historic Site Ohio Jamestown National Historic Site (affiliated area) Virginia Jimmy Carter National Historic Site Georgia John Fitzgerald Kennedy National Historic Site Massachusetts John Muir National Historic Site Californië Knife River Indian Villages National Historic Site North Dakota Lincoln Home National Historic Site Illinois Little Rock Central High School National Historic Site Arkansas Longfellow National Historic Site Massachusetts Lower East Side Tenement National Historic Site (affiliated area) New York McLoughlin House National Historic Site (affiliated area) Oregon Maggie L. Walker National Historic Site Virginia Manzanar National Historic Site Californië Martin Luther King, Jr. National Historic Site Georgia Martin Van Buren National Historic Site New York Mary McLeod Bethune Council House National Historic Site Washington D.C. Minuteman Missile National Historic Site South Dakota Nicodemus National Historic Site Kansas Ninety Six National Historic Site South Carolina Palo Alto Battlefield National Historic Site Texas Pennsylvania Avenue National Historic Site Washington D.C. Puukohola Heiau National Historic Site Hawaï Sagamore Hill National Historic Site New York Saint Croix Island International Historic Site Maine Saint Paul's Church National Historic Site New York Saint-Gaudens National Historic Site New Hampshire Salem Maritime National Historic Site Massachusetts San Juan National Historic Site Puerto Rico Saugus Iron Works National Historic Site Massachusetts Sewall-Belmont House National Historic Site (affiliated area) Washington D.C. Springfield Armory National Historic Site Massachusetts Steamtown National Historic Site Pennsylvania Theodore Roosevelt Birthplace National Historic Site New York Theodore Roosevelt Inaugural National Historic Site New York Thomas Cole National Historic Site (affiliated area) New York Thomas Stone National Historic Site Maryland Touro Synagogue National Historic Site (affiliated area) Rhode Island Tuskegee Airmen National Historic Site Alabama Tuskegee Institute National Historic Site Alabama Ulysses S. Grant National Historic Site Missouri Vanderbilt Mansion National Historic Site New York Washita Battlefield National Historic Site Oklahoma Weir Farm National Historic Site Connecticut Whitman Mission National Historic Site Washington William Howard Taft National Historic Site Ohio
Van bestemming gewijzigde National Historic Sites Naam Stichting Wijziging Resultaat Atlanta Campaign National Historic Site 13 oktober, 1944 21 september, 1950 Overgedragen aan de Staat Georgia. Mar-A-Lago National Historic Site 21 oktober, 1972 23 december, 1980 teruggegeven aan Post Foundation. St. Thomas National Historic Site 24 december, 1960 5 februari, 1975 Overgedragen aan de Maagdeneilanden.
Voorgestelde National Historic Sites NaamWet Ronald Reagan Boyhood Home National Historic Site(Gemachtigd door Public Law 107-137) Sand Creek Massacre National Historic Site(Gemachtigd door Public Law 106-464) William Jefferson Clinton Birthplace Home National Historic Site (H.R. 4192)
National Battlefield Parks NaamLocatie Kennesaw Mountain National Battlefield Park Georgia Manassas National Battlefield Park Virginia Richmond National Battlefield Park Virginia
National Military Parks NaamLocatie Chickamauga and Chattanooga National Military Park Georgia Fredericksburg and Spotsylvania National Military Park Fredericksburg National Cemetery Virginia Gettysburg National Military Park Gettysburg National Cemetery Pennsylvania Guilford Courthouse National Military Park North Carolina Horseshoe Bend National Military Park Alabama Kings Mountain National Military Park South Carolina Pea Ridge National Military Park Arkansas Shiloh National Military Park Shiloh National Cemetery Tennessee Vicksburg National Military Park Vicksburg National Cemetery Mississippi
National Battlefields NaamLocatie Antietam National Battlefield Antietam National Cemetery Maryland Big Hole National Battlefield Montana Cowpens National Battlefield South Carolina Fort Donelson National Battlefield Fort Donelson National Cemetery Tennessee Fort Necessity National Battlefield Pennsylvania Monocacy National Battlefield Maryland Moores Creek National Battlefield North Carolina Petersburg National Battlefield Poplar Grove National Cemetery Virginia Stones River National Battlefield