# List of National Historic Landmarks in Ohio

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This is a list of National Historic Landmarks in Ohio and other landmarks of equivalent landmark status in the state. The United States' National Historic Landmark (NHL) program is operated under the auspices of the National Park Service, and recognizes structures, districts, objects, and similar resources according to a list of criteria of national significance. There are 76 NHLs in Ohio and four additional National Park Service-administered areas of primarily historic importance.

## Current National Historic Landmarks in Ohio

Ohio's National Historic Landmarks are distributed across 37 of the 88 counties in the state. With fourteen NHLs, Hamilton County in the southwest corner has more than any other county.
| | Landmark name | Image | Date designated | Location | County | Description |
| 1 | Adena | Adena More images | February 27, 2003 (#70000515) | Chillicothe 39°21′13″N 83°00′55″W﻿ / ﻿39.353613°N 83.015345°W﻿ / 39.353613; -83.015345﻿ (Adena) | Ross | Mansion of Thomas Worthington |
| 2 | Baum-Taft House | Baum-Taft House More images | January 7, 1976 (#73001470) | Cincinnati 39°06′09″N 84°30′12″W﻿ / ﻿39.1025°N 84.503333°W﻿ / 39.1025; -84.503333﻿ (Baum-Taft House) | Hamilton | Taft family home now an art museum; designated for landscape murals by African-American artist Robert S. Duncanson. |
| 3 | Beginning Point of the U.S. Public Land Survey | Beginning Point of the U.S. Public Land Survey More images | June 23, 1965 (#66000606) | East Liverpool, OH and Ohioville, PA 40°38′26″N 80°31′10″W﻿ / ﻿40.640487°N 80.519377°W﻿ / 40.640487; -80.519377﻿ (Beginning Point of the U.S. Public Land Survey) | Columbiana, OH and Beaver, PA | Marker of origin of Northwest Territories survey, on Pennsylvania border |
| 4 | Carew Tower-Netherland Plaza Hotel | Carew Tower-Netherland Plaza Hotel More images | April 19, 1994 (#82003578) | Cincinnati 39°05′56″N 84°31′31″W﻿ / ﻿39.099012°N 84.525224°W﻿ / 39.099012; -84.525224﻿ (Carew Tower-Netherland Plaza Hotel) | Hamilton | |
| 5 | Central Branch, National Home for Disabled Volunteer Soldiers | Central Branch, National Home for Disabled Volunteer Soldiers More images | October 16, 2012 (#03001412) | Dayton 39°44′33″N 84°15′52″W﻿ / ﻿39.742368°N 84.26458°W﻿ / 39.742368; -84.26458﻿ (Central Branch, National Home for Disabled Volunteer Soldiers) | Montgomery | |
| 6 | Cincinnati Music Hall | Cincinnati Music Hall More images | December 2, 1974 (#70000496) | Cincinnati 39°06′32″N 84°31′06″W﻿ / ﻿39.108928°N 84.518286°W﻿ / 39.108928; -84.518286﻿ (Cincinnati Music Hall) | Hamilton | |
| 7 | Cincinnati Observatory | Cincinnati Observatory More images | December 9, 1997 (#80003043) | Cincinnati 39°08′27″N 84°25′22″W﻿ / ﻿39.140935°N 84.422699°W﻿ / 39.140935; -84.422699﻿ (Cincinnati Observatory) | Hamilton | |
| 8 | Cincinnati Union Terminal | Cincinnati Union Terminal More images | May 5, 1977 (#72001018) | Cincinnati 39°06′35″N 84°31′56″W﻿ / ﻿39.109778°N 84.532190°W﻿ / 39.109778; -84.532190﻿ (Cincinnati Union Terminal) | Hamilton | |
| 9 | Cincinnati Zoo Historic Structures | Cincinnati Zoo Historic Structures More images | February 27, 1987 (#87000905) | Cincinnati 39°08′33″N 84°30′34″W﻿ / ﻿39.142493°N 84.509395°W﻿ / 39.142493; -84.509395﻿ (Cincinnati Zoo Historic Structures) | Hamilton | |
| 10 | Cleveland Arcade | Cleveland Arcade More images | May 15, 1975 (#73001408) | Cleveland 41°29′59″N 81°41′27″W﻿ / ﻿41.499702°N 81.690794°W﻿ / 41.499702; -81.690794﻿ (Cleveland Arcade) | Cuyahoga | |
| 11 | USS Cod (Submarine) | USS Cod (Submarine) More images | January 14, 1986 (#86000088) | Cleveland 41°30′30″N 81°41′32″W﻿ / ﻿41.508328°N 81.692132°W﻿ / 41.508328; -81.692132﻿ (USS Cod (Submarine)) | Cuyahoga | The USS Cod Submarine Memorial is a National Historic Landmark and is docked in Cleveland, Ohio. |
| 12 | Jay Cooke Home | Jay Cooke Home More images | November 13, 1966 (#66000620) | Gibraltar Island 41°39′29″N 82°49′16″W﻿ / ﻿41.658056°N 82.821111°W﻿ / 41.658056; -82.821111﻿ (Jay Cooke Home) | Ottawa | Summer home of financier Jay Cooke |
| 13 | Covington And Cincinnati Suspension Bridge | Covington And Cincinnati Suspension Bridge More images | May 15, 1975 (#75000786) | Cincinnati, OH and Covington, KY 39°05′25″N 84°30′34″W﻿ / ﻿39.09039°N 84.509571°W﻿ / 39.09039; -84.509571﻿ (Covington And Cincinnati Suspension Bridge) | Hamilton, OH and Kenton, KY | John A. Roebling's suspension bridge here was dramatic new design. It set precedent for Brooklyn Bridge later. |
| 14 | Manasseh Cutler Hall, Ohio University | Manasseh Cutler Hall, Ohio University More images | December 21, 1965 (#66000604) | Athens 39°19′27″N 82°06′02″W﻿ / ﻿39.324184°N 82.100512°W﻿ / 39.324184; -82.100512﻿ (Manasseh Cutler Hall, Ohio University) | Athens | |
| 15 | Donald B. (Towboat) | Donald B. (Towboat) More images | December 20, 1989 (#89002458) | Bellaire 40°01′16″N 80°44′17″W﻿ / ﻿40.02111°N 80.73805°W﻿ / 40.02111; -80.73805﻿ (Donald B. (Towboat)) | Belmont | The Donald B. was built in 1923 and is the only 1920s unchanged diesel sternwheel towboat left in the United States. It still operates towing barges in the Ohio River. After years of being located in Switzerland County, Indiana, its home port was moved to Bellaire, Ohio in 2012. |
| 16 | Paul Laurence Dunbar House | Paul Laurence Dunbar House More images | December 29, 1962 (#66000619) | Dayton 39°45′27″N 84°13′07″W﻿ / ﻿39.757366°N 84.218681°W﻿ / 39.757366; -84.218681﻿ (Paul Laurence Dunbar House) | Montgomery | Home of black poet Paul Laurence Dunbar |
| 17 | Thomas A. Edison Birthplace | Thomas A. Edison Birthplace More images | January 12, 1965 (#66000608) | Milan 41°18′00″N 82°36′16″W﻿ / ﻿41.300066°N 82.604437°W﻿ / 41.300066; -82.604437﻿ (Thomas A. Edison Birthplace) | Erie | |
| 18 | Eldean Covered Bridge | Eldean Covered Bridge | December 23, 2016 (#100000868) | Troy 40°04′40″N 84°13′00″W﻿ / ﻿40.077902°N 84.216666°W﻿ / 40.077902; -84.216666﻿ (Eldean Covered Bridge) | Miami | Only one of twelve long truss bridges still intact. It is considered to be the most structurely intact. |
| 19 | Wilson Bruce Evans House | Wilson Bruce Evans House | December 9, 1997 (#80003143) | Oberlin 41°17′20″N 82°12′59″W﻿ / ﻿41.288888°N 82.216321°W﻿ / 41.288888; -82.216321﻿ (Wilson Bruce Evans House) | Lorain | |
| 20 | Fallen Timbers Battlefield | Fallen Timbers Battlefield | October 9, 1960 (#66000616) | Maumee 41°32′32″N 83°41′51″W﻿ / ﻿41.542262°N 83.697445°W﻿ / 41.542262; -83.697445﻿ (Fallen Timbers Battlefield) | Lucas | |
| 21 | Fort Ancient | Fort Ancient More images | July 19, 1964 (#66000625) | Lebanon 39°24′29″N 84°05′28″W﻿ / ﻿39.40806°N 84.0911°W﻿ / 39.40806; -84.0911﻿ (Fort Ancient) | Warren | |
| 22 | Fort Meigs | Fort Meigs More images | August 4, 1969 (#69000151) | Perrysburg 41°33′03″N 83°39′05″W﻿ / ﻿41.550806°N 83.651523°W﻿ / 41.550806; -83.651523﻿ (Fort Meigs) | Wood | |
| 23 | James A. Garfield Home | James A. Garfield Home More images | January 28, 1964 (#66000613) | Mentor 41°39′49″N 81°21′04″W﻿ / ﻿41.663616°N 81.351052°W﻿ / 41.663616; -81.351052﻿ (James A. Garfield Home) | Lake | |
| 24 | Joshua R. Giddings Law Office | Joshua R. Giddings Law Office More images | May 30, 1974 (#74001396) | Jefferson 41°44′18″N 80°45′47″W﻿ / ﻿41.738351°N 80.763127°W﻿ / 41.738351; -80.763127﻿ (Joshua R. Giddings Law Office) | Ashtabula | |
| 25 | Glendale Historic District | Glendale Historic District More images | May 5, 1977 (#76001447) | Glendale 39°16′18″N 84°27′49″W﻿ / ﻿39.271634°N 84.46362°W﻿ / 39.271634; -84.46362﻿ (Glendale Historic District) | Hamilton | |
| 26 | U.S. Grant Boyhood Home | U.S. Grant Boyhood Home More images | February 4, 1985 (#76001374) | Georgetown 38°51′57″N 83°54′08″W﻿ / ﻿38.865814°N 83.902148°W﻿ / 38.865814; -83.902148﻿ (U.S. Grant Boyhood Home) | Brown | |
| 27 | Greenhills Historic District | Greenhills Historic District | December 23, 2016 (#100000800) | Greenhills 39°15′50″N 84°31′28″W﻿ / ﻿39.263889°N 84.524444°W﻿ / 39.263889; -84.524444﻿ (Greenhills Historic District) | Hamilton | |
| 28 | Warren G. Harding Home | Warren G. Harding Home More images | June 23, 1965 (#66000618) | Marion 40°35′11″N 83°07′18″W﻿ / ﻿40.586279°N 83.121691°W﻿ / 40.586279; -83.121691﻿ (Warren G. Harding Home) | Marion | |
| 29 | Hawthorn Hill | Hawthorn Hill More images | July 17, 1991 (#74001585) | Oakwood 39°43′13″N 84°10′34″W﻿ / ﻿39.720416°N 84.176224°W﻿ / 39.720416; -84.176224﻿ (Hawthorn Hill) | Montgomery | The Orville Wright mansion. |
| 30 | Hopeton Earthworks | Hopeton Earthworks More images | July 19, 1964 (#66000623) | Hopetown 39°22′47″N 82°59′08″W﻿ / ﻿39.379604°N 82.985474°W﻿ / 39.379604; -82.985474﻿ (Hopeton Earthworks) | Ross | |
| 31 | Huffman Prairie Flying Field | Huffman Prairie Flying Field More images | June 21, 1990 (#71000640) | Fairborn 39°48′12″N 84°03′57″W﻿ / ﻿39.803333°N 84.065833°W﻿ / 39.803333; -84.065833﻿ (Huffman Prairie Flying Field) | Greene | |
| 32 | Johnson's Island Civil War Prison | Johnson's Island Civil War Prison More images | June 21, 1990 (#75001514) | Danbury 41°29′42″N 82°44′12″W﻿ / ﻿41.494998°N 82.73675°W﻿ / 41.494998; -82.73675﻿ (Johnson's Island Civil War Prison) | Ottawa | |
| 33 | Charles F. Kettering House | Charles F. Kettering House | December 22, 1977 (#77001080) | Kettering 39°41′33″N 84°11′34″W﻿ / ﻿39.692590°N 84.192796°W﻿ / 39.692590; -84.192796﻿ (Charles F. Kettering House) | Montgomery | |
| 34 | Kirtland Temple | Kirtland Temple More images | December 8, 1976 (#69000145) | Kirtland 41°37′33″N 81°21′44″W﻿ / ﻿41.625958°N 81.362149°W﻿ / 41.625958; -81.362149﻿ (Kirtland Temple) | Lake | |
| 35 | John Mercer Langston House | John Mercer Langston House More images | May 15, 1975 (#75001464) | Oberlin 41°17′30″N 82°12′31″W﻿ / ﻿41.291556°N 82.208590°W﻿ / 41.291556; -82.208590﻿ (John Mercer Langston House) | Lorain | |
| 36 | Langstroth Cottage | Langstroth Cottage More images | December 21, 1981 (#76001378) | Oxford 39°30′17″N 84°43′49″W﻿ / ﻿39.504648°N 84.730223°W﻿ / 39.504648; -84.730223﻿ (Langstroth Cottage) | Butler | |
| 37 | Edward D. Libbey House | Edward D. Libbey House More images | May 4, 1983 (#83004379) | Toledo 41°39′38″N 83°33′32″W﻿ / ﻿41.660549°N 83.559008°W﻿ / 41.660549; -83.559008﻿ (Edward D. Libbey House) | Lucas | |
| 38 | Benjamin Lundy House | Benjamin Lundy House More images | May 30, 1974 (#74001537) | Mt. Pleasant 40°10′29″N 80°48′13″W﻿ / ﻿40.17483°N 80.80354°W﻿ / 40.17483; -80.80354﻿ (Benjamin Lundy House) | Jefferson | |
| 39 | MAJESTIC (Showboat) | MAJESTIC (Showboat) | December 20, 1989 (#80003085) | Cincinnati 39°05′42″N 84°30′17″W﻿ / ﻿39.09497°N 84.50467°W﻿ / 39.09497; -84.50467﻿ (MAJESTIC (Showboat)) | Hamilton | |
| 40 | May 4, 1970, Kent State Shootings Site | May 4, 1970, Kent State Shootings Site | December 23, 2016 (#100000879) | Kent 41°09′00″N 81°20′36″W﻿ / ﻿41.1501°N 81.3433°W﻿ / 41.1501; -81.3433﻿ (May 4, 1970, Kent State Shootings Site) | Portage | Site of May 4, 1970, shootings of Vietnam War protesters by Ohio National Guardsmen that killed four. |
| 41 | William H. McGuffey Boyhood Home Site | William H. McGuffey Boyhood Home Site More images | May 23, 1966 (#66000617) | Coitsville Township 41°06′57″N 80°33′31″W﻿ / ﻿41.115833°N 80.558611°W﻿ / 41.115833; -80.558611﻿ (William H. McGuffey Boyhood Home Site) | Mahoning | |
| 42 | William H. McGuffey House | William H. McGuffey House More images | December 21, 1965 (#66000605) | Oxford 39°30′26″N 84°44′10″W﻿ / ﻿39.507230°N 84.736078°W﻿ / 39.507230; -84.736078﻿ (William H. McGuffey House) | Butler | |
| 43 | William McKinley Tomb | William McKinley Tomb More images | May 15, 1975 (#70000516) | Canton 40°48′24″N 81°23′33″W﻿ / ﻿40.806667°N 81.3925°W﻿ / 40.806667; -81.3925﻿ (William McKinley Tomb) | Stark | |
| 44 | Miami and Erie Canal Deep Cut | Miami and Erie Canal Deep Cut More images | January 29, 1964 (#66000603) | Spencerville 40°41′15″N 84°21′55″W﻿ / ﻿40.6875°N 84.365278°W﻿ / 40.6875; -84.365278﻿ (Miami and Erie Canal Deep Cut) | Allen and Auglaize | Mile long segment of the Miami and Erie Canal cut as deep as 52 feet (16 m), in order to cut a trough through a blue clay ridge separating the St. Marys and Auglaize River watersheds |
| 45 | Mount Pleasant Historic District | Mount Pleasant Historic District | April 5, 2005 (#74001536) | Mt. Pleasant 40°10′28″N 80°47′55″W﻿ / ﻿40.174444°N 80.798611°W﻿ / 40.174444; -80.798611﻿ (Mount Pleasant Historic District) | Jefferson | |
| 46 | Newark Earthworks | Newark Earthworks More images | July 19, 1964 (#66000614) | Heath and Newark 40°02′32″N 82°25′48″W﻿ / ﻿40.042167°N 82.430111°W﻿ / 40.042167; -82.430111﻿ (Newark Earthworks) | Licking | |
| 47 | Oberlin College | Oberlin College More images | December 21, 1965 (#66000615) | Oberlin 41°17′35″N 82°13′07″W﻿ / ﻿41.292929°N 82.218576°W﻿ / 41.292929; -82.218576﻿ (Oberlin College) | Lorain | |
| 48 | Ohio and Erie Canal | Ohio and Erie Canal More images | November 13, 1966 (#66000607) | Valley View 41°22′14″N 81°36′59″W﻿ / ﻿41.370525°N 81.616442°W﻿ / 41.370525; -81.616442﻿ (Ohio and Erie Canal) | Cuyahoga | A four mile (6 km) section of canal, including Tinkers Creek Aqueduct |
| 49 | Ohio Statehouse | Ohio Statehouse More images | December 22, 1977 (#72001011) | Columbus 39°57′41″N 82°59′56″W﻿ / ﻿39.961389°N 82.998889°W﻿ / 39.961389; -82.998889﻿ (Ohio Statehouse) | Franklin | |
| 50 | Ohio Theatre | Ohio Theatre More images | May 5, 1977 (#73001437) | Columbus 39°57′37″N 82°59′57″W﻿ / ﻿39.960281°N 82.999078°W﻿ / 39.960281; -82.999078﻿ (Ohio Theatre) | Franklin | |
| 51 | John P. Parker House | John P. Parker House More images | February 18, 1997 (#97000340) | Ripley 38°44′56″N 83°50′56″W﻿ / ﻿38.748852°N 83.848872°W﻿ / 38.748852; -83.848872﻿ (John P. Parker House) | Brown | |
| 52 | George Hunt Pendleton House | George Hunt Pendleton House | January 29, 1964 (#66000611) | Cincinnati 39°06′36″N 84°30′16″W﻿ / ﻿39.110102°N 84.504483°W﻿ / 39.110102; -84.504483﻿ (George Hunt Pendleton House) | Hamilton | |
| 53 | Pennsylvania Railroad Depot and Baggage Room | Pennsylvania Railroad Depot and Baggage Room More images | June 17, 2011 (#76001536) | Dennison 40°23′32″N 81°19′56″W﻿ / ﻿40.392155°N 81.332178°W﻿ / 40.392155; -81.332178﻿ (Pennsylvania Railroad Depot and Baggage Room) | Tuscarawas | |
| 54 | People's Federal Savings and Loan Association | People's Federal Savings and Loan Association More images | December 22, 1977 (#72001042) | Sidney 40°17′04″N 84°09′23″W﻿ / ﻿40.284410°N 84.156437°W﻿ / 40.284410; -84.156437﻿ (People's Federal Savings and Loan Association) | Shelby | Louis Sullivan-designed bank building |
| 55 | Plum Street Temple | Plum Street Temple More images | May 15, 1975 (#72001021) | Cincinnati 39°06′14″N 84°31′07″W﻿ / ﻿39.103937°N 84.518678°W﻿ / 39.103937; -84.518678﻿ (Plum Street Temple) | Hamilton | |
| 56 | John Rankin House | John Rankin House More images | February 18, 1997 (#70000485) | Ripley 38°45′04″N 83°50′32″W﻿ / ﻿38.751111°N 83.842222°W﻿ / 38.751111; -83.842222﻿ (John Rankin House) | Brown | Home of John Rankin, abolitionist. |
| 57 | Captain Edward V. Rickenbacker House | Captain Edward V. Rickenbacker House More images | May 11, 1976 (#76001426) | Columbus 39°56′58″N 82°57′44″W﻿ / ﻿39.949339°N 82.962179°W﻿ / 39.949339; -82.962179﻿ (Captain Edward V. Rickenbacker House) | Franklin | |
| 58 | S. Bridge, National Road | S. Bridge, National Road More images | January 29, 1964 (#66000610) | Old Washington 40°02′36″N 81°22′27″W﻿ / ﻿40.043298°N 81.374300°W﻿ / 40.043298; -81.374300﻿ (S. Bridge, National Road) | Guernsey | |
| 59 | Serpent Mound | Serpent Mound More images | July 19, 1964 (#66000602) | Locust Grove 39°01′00″N 83°26′00″W﻿ / ﻿39.0166666°N 83.433334°W﻿ / 39.0166666; -83.433334﻿ (Serpent Mound) | Adams | |
| 60 | Sherman Birthplace | Sherman Birthplace More images | January 29, 1964 (#66000609) | Lancaster 39°42′49″N 82°36′04″W﻿ / ﻿39.713722°N 82.600988°W﻿ / 39.713722; -82.600988﻿ (Sherman Birthplace) | Fairfield | |
| 61 | Dr. Bob's Home (Dr. Robert and Anne Smith House) | Dr. Bob's Home (Dr. Robert and Anne Smith House) More images | October 16, 2012 (#85003411) | Akron 41°05′45″N 81°32′57″W﻿ / ﻿41.095797°N 81.549234°W﻿ / 41.095797; -81.549234﻿ (Dr. Bob's Home (Dr. Robert and Anne Smith House)) | Summit | Birthplace of Alcoholics Anonymous, co-founded by Bob Smith (doctor) |
| 62 | Spacecraft Propulsion Research Facility (B-2) | Spacecraft Propulsion Research Facility (B-2) | October 3, 1985 (#85002802) | Sandusky 41°21′55″N 82°41′01″W﻿ / ﻿41.365141°N 82.6837°W﻿ / 41.365141; -82.6837﻿ (Spacecraft Propulsion Research Facility (B-2)) | Erie | the world's only facility capable of testing full-scale upper-stage launch vehicles and rocket engines under simulated high-altitude conditions. |
| 63 | Spiegel Grove (Rutherford B. Hayes Home) | Spiegel Grove (Rutherford B. Hayes Home) More images | January 29, 1964 (#66000624) | Fremont 41°20′31″N 83°07′35″W﻿ / ﻿41.342037°N 83.126354°W﻿ / 41.342037; -83.126354﻿ (Spiegel Grove (Rutherford B. Hayes Home)) | Sandusky | Estate of U.S. president Rutherford B. Hayes, now a state park |
| 64 | Spring Grove Cemetery | Spring Grove Cemetery More images | March 29, 2007 (#76001440) | Cincinnati 39°09′53″N 84°31′23″W﻿ / ﻿39.164661°N 84.522949°W﻿ / 39.164661; -84.522949﻿ (Spring Grove Cemetery) | Hamilton | |
| 65 | Stan Hywet Hall | Stan Hywet Hall More images | December 21, 1981 (#75002058) | Akron 41°07′02″N 81°32′55″W﻿ / ﻿41.117104°N 81.548583°W﻿ / 41.117104; -81.548583﻿ (Stan Hywet Hall) | Summit | |
| 66 | Sunwatch Site | Sunwatch Site More images | June 21, 1990 (#75001500) | Dayton 39°42′48″N 84°13′55″W﻿ / ﻿39.71321°N 84.231861°W﻿ / 39.71321; -84.231861﻿ (Sunwatch Site) | Montgomery | |
| 67 | Alphonso Taft Home (William Howard Taft Home) | Alphonso Taft Home (William Howard Taft Home) More images | January 29, 1964 (#66000612) | Cincinnati 39°06′03″N 84°30′12″W﻿ / ﻿39.100707°N 84.503311°W﻿ / 39.100707; -84.503311﻿ (Alphonso Taft Home (William Howard Taft Home)) | Hamilton | Birthplace and home until age 25 of U.S. President William Howard Taft |
| 68 | John B. Tytus House | John B. Tytus House | May 11, 1976 (#75001335) | Middletown 39°30′47″N 84°24′30″W﻿ / ﻿39.513148°N 84.408301°W﻿ / 39.513148; -84.408301﻿ (John B. Tytus House) | Butler | |
| 69 | Harriet Taylor Upton House | Harriet Taylor Upton House More images | October 5, 1992 (#92001884) | Warren 41°14′22″N 80°49′21″W﻿ / ﻿41.239442°N 80.822558°W﻿ / 41.239442; -80.822558﻿ (Harriet Taylor Upton House) | Trumbull | |
| 70 | Village of Mariemont | Village of Mariemont More images | March 29, 2007 (#07000431) | Mariemont 39°08′35″N 84°22′51″W﻿ / ﻿39.143056°N 84.380833°W﻿ / 39.143056; -84.380833﻿ (Village of Mariemont) | Hamilton | |
| 71 | W.P. SNYDER, JR. (Towboat) | W.P. SNYDER, JR. (Towboat) More images | June 29, 1989 (#70000522) | Marietta 39°25′06″N 81°27′48″W﻿ / ﻿39.418301°N 81.463291°W﻿ / 39.418301; -81.463291﻿ (W.P. SNYDER, JR. (Towboat)) | Washington | |
| 72 | Wright Cycle Company And Wright Printing Shop | Wright Cycle Company And Wright Printing Shop | June 21, 1990 (#86000236) | Dayton 39°45′20″N 84°12′43″W﻿ / ﻿39.755525°N 84.212047°W﻿ / 39.755525; -84.212047﻿ (Wright Cycle Company And Wright Printing Shop) | Montgomery | |
| 73 | Wright Flyer III | Wright Flyer III More images | June 21, 1990 (#90001747) | Dayton 39°43′33″N 84°12′07″W﻿ / ﻿39.725907°N 84.202073°W﻿ / 39.725907; -84.202073﻿ (Wright Flyer III) | Montgomery | 1905 Wright Flyer III airplane |
| 74 | Colonel Charles Young House | Colonel Charles Young House More images | May 30, 1974 (#74001506) | Wilberforce 39°42′26″N 83°53′25″W﻿ / ﻿39.707252°N 83.890227°W﻿ / 39.707252; -83.890227﻿ (Colonel Charles Young House) | Greene | Now the Charles Young Buffalo Soldiers National Monument. |
| 75 | Zero Gravity Research Facility | Zero Gravity Research Facility More images | October 3, 1985 (#85002801) | Cleveland 41°24′37″N 81°51′51″W﻿ / ﻿41.410245°N 81.8641°W﻿ / 41.410245; -81.8641﻿ (Zero Gravity Research Facility) | Cuyahoga | vacuum chamber where drop tests are conducted to simulate low gravity conditions |
| 76 | Zoar Historic District | Zoar Historic District More images | October 31, 2016 (#16000859) | Zoar 40°36′47″N 81°25′18″W﻿ / ﻿40.613056°N 81.421667°W﻿ / 40.613056; -81.421667﻿ (Zoar Historic District) | Tuscarawas | Only permanent home of the Society of Separatists in the United States. |

## Historic areas of the National Park System in Ohio

National Historic Sites, National Historic Parks, National Memorials, and certain other areas listed in the National Park system are historic landmarks of national importance that are highly protected already, sometimes before the inauguration of the NHL program in 1960, and are then often not also named NHLs per se. There are seven of these in Ohio. The National Park Service lists these seven together with the NHLs in the state.
The James A. Garfield National Historic Site, the William Howard Taft National Historic Site, and the Charles Young Buffalo Soldiers National Monument are also designated as NHLs and are listed above. The remaining four are as follows.
| | Landmark name | Date established | Location | County | Description |
| 1 | Dayton Aviation Heritage National Historical Park | October 16, 1992 | Dayton, Ohio | | Includes the Huffman Prairie Flying Field, Wright Cycle Company building, 1905 Wright Flyer III, Paul Laurence Dunbar State Memorial, and Hawthorn Hill NHLs |
| 2 | First Ladies National Historic Site | October 11, 2000 | Canton | Stark | |
| 3 | Hopewell Culture National Historical Park | March 2, 1923 | Chillicothe | Ross | |
| 4 | Perry's Victory and International Peace Memorial | June 2, 1936 | Put-in-Bay | Ottawa | |

## Former NHLs in Ohio

| | Landmark name | Date designated | Date withdrawn | Locality | County | Description |
| 1 | Hotel Breakers | March 9, 1987 | August 7, 2001 | Sandusky | Erie | Significantly altered in 1999. |
| 2 | Rocket Engine Test Facility | October 3, 1985 | May 4, 2005 | Cleveland | Cuyahoga | Demolished in 2003. |
| 3 | Benjamin F. Wade House | December 21, 1965 | 1968 or 1970 | Jefferson | Ashtabula | Home of Civil War-era politician Benjamin F. Wade; demolished c. 1968. |