| Museum | Location | County |
|---|
| 1810 House | Portsmouth | Scioto |
| A.B. Graham Center | Conover | Miami |
| A Christmas Story House | Cleveland | Cuyahoga |
| Adena Mansion | Chillicothe | Ross |
| African American Museum | Cleveland | Cuyahoga |
| AHA! A Hands-On Adventure | Lancaster | Fairfield |
| Akron Art Museum | Akron | Summit |
| Alexandria Museum | Alexandria | Licking |
| Algonquin Mill Complex | Carrollton | Carroll |
| Allen County Museum | Lima | Allen |
| Allen Memorial Art Museum | Oberlin | Lorain |
| Alpine Hills Museum | Sugarcreek | Tuscarawas |
| Alverta Green Museum | Mason | Warren |
| American Civil War Museum of Ohio | Tiffin | Seneca |
| American Classical Music Hall of Fame and Museum | Cincinnati | Hamilton |
| American Sign Museum | Cincinnati | Hamilton |
| America's Packard Museum | Dayton | Montgomery |
| Amish & Mennonite Heritage Center | Berlin | Holmes |
| Anti-Saloon League Museum | Westerville | Franklin |
| Art Academy of Cincinnati | Cincinnati | Hamilton |
| Armstrong Air and Space Museum | Wapakoneta | Auglaize |
| Artists Archives of the Western Reserve | Cleveland | Cuyahoga |
| ArtSpace Lima | Lima | Allen |
| Asahel Wright House Museum | Centerville | Montgomery |
| Ashland County Historical Society Museum | Ashland | Ashland |
| Ashtabula Maritime Museum | Ashtabula | Ashtabula |
| Ashton House Museum | Carrollton | Carroll |
| Athens County Historical Society & Museum | Athens | Athens |
| Auman Museum of Radio & Television | Dover | Tuscarawas |
| Aurora Historical Society Museum | Aurora | Portage |
| Avery Downer House/Robbins Hunter Museum | Granville | Licking |
| Baker Family Museum | Caldwell | Noble |
| Baltimore Community Museum | Baltimore | Fairfield |
| Bear's Mill | Greenville | Darke |
| Beaver Creek State Park Pioneer Village | East Liverpool | Columbiana |
| Bedford Historical Society | Bedford | Cuyahoga |
| Belmont County Victorian Mansion Museum | Barnesville | Belmont |
| Benninghofen House | Hamilton | Butler |
| Beta Theta Pi Fraternity Museum | Oxford | Butler |
| Betts House | Cincinnati | Hamilton |
| Biblewalk | Mansfield | Richland |
| Bicycle Museum of America | New Bremen | Auglaize |
| Billy Ireland Cartoon Library & Museum | Columbus | Franklin |
| Blakeslee Log Cabin | Ashtabula | Ashtabula |
| Bluebird Farm | Carrollton | Carroll |
| Bob Evans Homestead Museum | Bidwell | Gallia |
| Boonshoft Museum of Discovery | Dayton | Montgomery |
| Bowling Green State University Fine Art Galleries | Bowling Green | Wood |
| Bradford Ohio Railroad Museum | Bradford | Darke |
| Brooklyn Historical Society Museum | Brooklyn | Cuyahoga |
| Brookville Railroad Depot | Brookville | Montgomery |
| Brownella Cottage | Galion | Crawford |
| Buckeye Furnace | Milton Township | Jackson |
| Butler Institute of American Art | Youngstown | Mahoning |
| Butts Museum | Fowler | Trumbull |
| Caesar's Creek Pioneer Village | Waynesville | Warren |
| Campus Martius Museum | Marietta | Washington |
| Canton Classic Car Museum | Canton | Stark |
| Canton Museum of Art | Canton | Stark |
| Carillon Historical Park | Dayton | Montgomery |
| Carriage Hill MetroPark Historical Farm | Dayton | Montgomery |
| Carroll County Arts Center | Carrollton | Carroll |
| The Castle (Marietta, Ohio) | Marietta | Washington |
| Center for Holocaust and Humanity Education | Cincinnati | Hamilton |
| Central Insurance Companies Fire Museum | Van Wert | Van Wert |
| Central Ohio Fire Museum | Columbus | Franklin |
| Century Village Museum | Burton | Geauga |
| Chateau Laroche | Loveland | Clermont |
| Chester Courthouse | Long Bottom | Meigs |
| Children's Museum of Cleveland | Cleveland | Cuyahoga |
| Chillicothe Area History Museum | Chillicothe | Ross |
| Chilo Lock 34 Park | Chilo | Clermont |
| Chrisholm Historic Farmstead | Trenton | Butler |
| Christ Church Museum | Windsor | Ashtabula |
| Cincinnati Art Museum | Cincinnati | Hamilton |
| Cincinnati Fire Museum | Cincinnati | Hamilton |
| Cincinnati History Museum | Cincinnati | Hamilton |
| Cincinnati Museum Center at Union Terminal | Cincinnati | Hamilton |
| Cincinnati Reds Hall of Fame and Museum | Cincinnati | Hamilton |
| Clague House Museum | Westlake | Cuyahoga |
| Clark County Heritage Center | Springfield | Clark |
| Clark Gable Birthplace and Museum | Cadiz | Harrison |
| Cleo Redd Fisher Museum | Loudonville | Ashland |
| Cleveland Hungarian Heritage Society Museum | Cleveland | Cuyahoga |
| Cleveland Museum of Art | Cleveland | Cuyahoga |
| Cleveland Museum of Natural History | Cleveland | Cuyahoga |
| Cleveland Police Museum | Cleveland | Cuyahoga |
| Cleveland State University Art Gallery | Cleveland | Cuyahoga |
| Clifton Mill | Clifton | Greene |
| COSI Columbus | Columbus | Franklin |
| Columbus Museum of Art | Columbus | Franklin |
| Conneaut Area Historical Society Museum | Conneaut | Ashtabula |
| Contemporary Arts Center | Cincinnati | Hamilton |
| Cowan Pottery Museum | Rocky River | Cuyahoga |
| Crawford Auto-Aviation Museum | Cleveland | Cuyahoga |
| Creek Bend Farm | Lindsey | Sandusky |
| Crile Archives | Parma | Cuyahoga |
| Cuyahoga Valley Historical Museum | Peninsula | Summit |
| Dairy Barn Arts Center | Athens | Athens |
| Daniel Gebhart Tavern Museum | Miamisburg | Montgomery |
| Daniel McCook House | Carrollton | Carroll |
| Daniel Mooney Museum | St. Marys | Auglaize |
| David Nickens Heritage Center | Chillicothe | Ross |
| Dayton Art Institute | Dayton | Montgomery |
| Dayton Aviation Heritage National Historical Park | Dayton | Montgomery |
| Dayton International Peace Museum | Dayton | Montgomery |
| Dayton Visual Arts Center | Dayton | Montgomery |
| Decorative Arts Center of Ohio | Lancaster | Fairfield |
| Delhi Historical Society Farmhouse Museum | Delhi Township | Hamilton |
| Delphos Canal Commission Museum | Delphos | Allen |
| Delphos Museum | Delphos | Allen |
| Delphos Museum of Postal History | Delphos | Allen |
| Denison Museum | Granville | Licking |
| Dennison Railroad Depot Museum | Dennison | Tuscarawas |
| DeWitt Log Homestead | Oxford | Butler |
| Dr. Bob's Home | Akron | Summit |
| Dr. Increase Mathews House | Zanesville | Muskingum |
| Dittrick Museum of Medical History | Cleveland | Cuyahoga |
| Doll Museum at the Old Rectory | Worthington | Franklin |
| Doty Homestead | Oxford | Butler |
| Drake Planetarium and Science Center | Cincinnati | Hamilton |
| Duke Energy Children's Museum | Cincinnati | Hamilton |
| Dunham Tavern Museum | Cleveland | Cuyahoga |
| Early Television Museum | Hilliard | Franklin |
| East Palestine Historical Society Log House | East Palestine | Columbiana |
| Edison Birthplace Museum | Milan | Erie |
| Ed Jeffers Barber Museum | Canal Winchester | Franklin |
| Elizabeth Township Museum | Troy | Miami |
| Ely Chapman Foundation | Marietta | Washington |
| EnterTrainment Junction | West Chester | Butler |
| Eleutherus Cooke House | Sandusky | Erie |
| Evelyn True Button House | McConnelsville | Morgan |
| Fairport Harbor Marine Museum and Lighthouse | Fairport Harbor | Lake |
| Farmers' Castle Museum Education Center | Belpre | Washington |
| Fawick Art Gallery | Berea | Cuyahoga |
| Finnish Heritage Museum | Fairport Harbor | Lake |
| Firelands Museum | Norwalk | Huron |
| First Ladies National Historic Site | Canton | Stark |
| Fitton Center for the Arts | Hamilton | Butler |
| Flint Ridge State Memorial | Hopewell Township | Licking |
| Follett House Museum | Sandusky | Erie |
| Fort Ancient | Lebanon | Warren |
| Fort Firelands | Marblehead | Ottawa |
| Fort Laurens | Bolivar | Tuscarawas |
| Fort Meigs | Perrysburg | Wood |
| Fort Recovery | Fort Recovery | Mercer |
| Fort Rowdy Museum | Covington | Miami |
| Fort Steuben | Steubenville | Jefferson |
| Fostoria Glass Heritage Gallery | Fostoria | Seneca |
| Franklin Museum | New Athens | Harrison |
| Frank Museum of Art | Westerville | Franklin |
| Frank W. Hale Jr. Black Cultural Center | Columbus | Franklin |
| Fredericktown Historical Museum | Fredericktown | Knox |
| Frostville Museum | North Olmsted | Cuyahoga |
| Fulton County Museum | Wauseon | Fulton |
| Gahanna Historical Society Museums | Gahanna | Franklin |
| Garst Museum | Greenville | Darke |
| Georgian Museum | Lancaster | Fairfield |
| German Heritage Museum | Cincinnati | Hamilton |
| Glendower Mansion | Lebanon | Warren |
| Gnadenhutten Historical Park and Museum | Gnadenhutten | Tuscarawas |
| Gorman Heritage Farm | Evendale | Hamilton |
| Goshen Historical Society Museum | Goshen | Clermont |
| Governor Bebb MetroPark & Pioneer Village | Okeana | Butler |
| Grant Birthplace | Point Pleasant | Clermont |
| Grant Boyhood Home | Georgetown | Brown |
| Grant Schoolhouse | Georgetown | Brown |
| Granville Historical Society Museum | Granville | Licking |
| Great Lakes Science Center | Cleveland | Cuyahoga |
| Great Western Schoolhouse | St. Clairsville | Belmont |
| Greater Buckeye Lake Historical Society Museum | Buckeye Lake | Licking |
| Greater Cincinnati Police Museum | Cincinnati | Hamilton |
| Greater Cleveland Slow Pitch Softball Hall of Fame and Museum | Euclid | Cuyahoga |
| Greater Loveland Historical Society Museum | Loveland | Hamilton |
| Greene County Historical Society Museum | Xenia | Greene |
| Guernsey County Historical Museum | Cambridge | Guernsey |
| Hale Farm & Village | Bath Township | Summit |
| Hancock Historical Museum | Findlay | Hancock |
| Hardin County Historical Museums | Kenton | Hardin |
| Harding Museum | Franklin | Warren |
| Harmony Hill Historical Museum | Williamsburg | Clermont |
| Harriet Beecher Stowe House | Cincinnati | Hamilton |
| Harris Dental Museum | Bainbridge | Ross |
| Harrison County History of Coal Museum | Cadiz | Harrison |
| Hauck House Museum | Cincinnati | Hamilton |
| Hawthorn Hill | Oakwood | Montgomery |
| Hefner Museum of Natural History | Oxford | Butler |
| Henry Fearing House Museum | Marietta | Washington |
| Heritage Center Museum | Reynoldsburg | Franklin |
| Heritage Hall | Hamilton | Butler |
| Hezekiah Dunham House | Bedford | Cuyahoga |
| Heritage Farm Museum | Brunswick | Medina |
| Heritage Hall | Marion | Marion |
| Heritage Museum (Columbus) | Columbus | Franklin |
| Heritage Village Museum | Sharonville | Hamilton |
| Hickories Museum | Elyria | Lorain |
| Hiestand Galleries | Oxford | Butler |
| Highland House Museum | Hillsboro | Highland |
| Highlands Nature Sanctuary | Bainbridge | Ross |
| Historic Costume & Textile Collection | Columbus | Franklin |
| Historic Kirtland Village | Kirtland | Lake |
| Historic Lyme Village | Bellevue | Huron |
| Historical Society of Germantown Museum | Germantown | Montgomery |
| Hoover Historical Center | North Canton | Stark |
| Hopalong Cassidy Museum | Cambridge | Guernsey |
| Hopewell Culture National Historical Park | Chillicothe | Ross |
| Hower House | Akron | Summit |
| Hubbard House Underground Railroad Museum | Ashtabula | Ashtabula |
| Huffman Prairie Flying Field | Fairborn | Greene |
| Iams Homestead Museum | Trotwood | Montgomery |
| Imagination Station | Toledo | Lucas |
| Indian Museum of Lake County, Ohio | Willoughby | Lake |
| International Women's Air & Space Museum | Cleveland | Cuyahoga |
| J. E. Reeves Victorian Home & Carriage House Museum | Dover | Tuscarawas |
| Jack Nicklaus Museum | Columbus | Franklin |
| James A. Garfield National Historic Site | Mentor | Lake |
| Jefferson County Historical Association & Museum | Steubenville | Jefferson |
| Jefferson Depot | Jefferson | Ashtabula |
| Jennie Munger Gregory Memorial Museum | Geneva on the Lake | Ashtabula |
| John & Annie Glenn Historic Site | New Concord | Muskingum |
| John Scott Garbry Museum | Piqua | Miami |
| John P. Parker House | Ripley | Brown |
| John Rankin House | Ripley | Brown |
| John Smart House | Medina | Medina |
| John Stark Edwards House and Museum | Warren | Trumbull |
| Johnny Appleseed Museum | Urbana | Champaign |
| Johnson-Humrickhouse Museum | Coshocton | Coshocton |
| Johnson's Island Museum | Marblehead | Ottawa |
| Johnston Farm and Indian Agency | Piqua | Miami |
| Joshua Reed Giddings Law Office | Jefferson | Ashtabula |
| Jubilee Museum and Catholic Cultural Center | Columbus | Franklin |
| Karl Limper Geology Museum | Oxford | Butler |
| Keeper's House | Marblehead | Ottawa |
| Kelton House Museum and Garden | Columbus | Franklin |
| Kemper Log House | Cincinnati | Hamilton |
| Kennedy Museum of Art | Athens | Athens |
| Kennedy Stone House | Cambridge | Guernsey |
| Kent State School of Art Galleries | Kent | Portage |
| Kent State University Museum | Kent | Portage |
| Kelso House Museum | Brimfield | Portage |
| Kern-Harrington Museum | Plain Township | Franklin |
| Killbuck Valley Museum | Killbuck | Holmes |
| Kingwood Center | Mansfield | Richland |
| Kirtland Temple | Kirtland | Lake |
| Knox County Historical Society Museum | Mount Vernon | Knox |
| Lake County History Center | Painesville Township | Lake |
| Lake Erie Islands Historical Society Museum | Put-in-Bay | Ottawa |
| Lake Erie Islands Nature and Wildlife Center | Put-in-Bay | Ottawa |
| Lake Erie Nature & Science Center | Bay Village | Cuyahoga |
| Lake Metroparks Farmpark | Kirtland | Lake |
| Lane-Hooven House | Hamilton | Butler |
| Laurel Court | Cincinnati | Hamilton |
| Learning Center and Money Museum | Cleveland | Cuyahoga |
| LeFevre Gallery | Newark | Licking |
| Lenox Rural Museum | Jefferson | Ashtabula |
| Liberty Aviation Museum | Port Clinton | Ottawa |
| Lillian Jones Museum | Jackson | Jackson |
| Lisbon Historical Society Museum | Lisbon | Columbiana |
| Little Italy Heritage Museum | Cleveland | Cuyahoga |
| Little Red Schoolhouse | Bowling Green | Wood |
| Lloyd Library and Museum | Cincinnati | Hamilton |
| Logan County Museum | Bellefontaine | Logan |
| Loghurst | Canfield | Mahoning |
| Louis Stokes Museum | Cleveland | Cuyahoga |
| Lowrie-Beatty Museum | Ravenna | Portage |
| Lucy Hayes Heritage Center | Chillicothe | Ross |
| Mad River & NKP Railroad Museum | Bellevue | Huron |
| Mahler Museum & History Center | Berea | Cuyahoga |
| Malabar Farm State Park | Lucas | Richland |
| Maltz Museum of Jewish Heritage | Beachwood | Cuyahoga |
| Mansfield Art Center | Mansfield | Richland |
| Mansfield Fire Museum | Mansfield | Richland |
| Mansfield Memorial Museum | Mansfield | Richland |
| Mansfield Reformatory | Mansfield | Richland |
| MAPS Air Museum | Green | Summit |
| Marblehead Lighthouse Museum | Marblehead | Ottawa |
| Maria Stein Shrine of the Holy Relics | Fort Recovery | Mercer |
| Marietta Soda Fountain & Museum | Marietta | Washington |
| Maritime Museum of Sandusky | Sandusky | Erie |
| Massillon Museum | Massillon | Stark |
| Matamoras Area Historical Society Museum | Matamoras | Washington |
| Mayfield Township Historical Society Museum | Mayfield Township | Cuyahoga |
| Mazza Museum of International Art from Picture Books | Findlay | Hancock |
| McDonough Museum of Art | Youngstown | Mahoning |
| McKinley Memorial Library, Museum & Birthplace Home | Niles | Trumbull |
| Merry-Go-Round Museum | Sandusky | Erie |
| Meigs County Museum | Pomeroy | Meigs |
| Mentor Safety Village | Mentor | Lake |
| Miakonda Museum | Toledo | Lucas |
| Miami University Art Museum | Oxford | Butler |
| Miami Valley Military History Museum | Dayton | Montgomery |
| Middletown Canal Museum | Middletown | Butler |
| Middleton Doll Home Store and Legacy Dollhouse Museum | Belpre | Washington |
| Midwest Railway Preservation Society | Cleveland | Cuyahoga |
| Mid-Ohio Historical Museum | Canal Winchester | Franklin |
| Milan Historical Museum | Milan | Erie |
| Mill Creek Falls History Center | Cleveland | Cuyahoga |
| Millersburg Glass Museum | Millersburg | Holmes |
| Monroe Historical Society Museum | Monroe | Butler |
| Monument Cabin | Hamilton | Butler |
| Moore House Museum | Lorain | Lorain |
| Morgan County Historical Society Museum | McConnelsville | Morgan |
| Motorcycle Hall of Fame | Pickerington | Franklin |
| Motts Military Museum | Groveport | Franklin |
| Museum at the Friends Home | Waynesville | Warren |
| Museum of Ceramics | East Liverpool | Columbiana |
| Museum of Classical Archaeology | Columbus | Franklin |
| Museum of Contemporary Art Cleveland | Cleveland | Cuyahoga |
| Museum of Divine Statues | Lakewood | Cuyahoga |
| Museum of Natural History & Science | Cincinnati | Hamilton |
| Museum of Troy History | Troy | Miami |
| Myers School of Art Galleries | Akron | Summit |
| NASA Glenn Research Center | Cleveland | Cuyahoga |
| National Afro-American Museum and Cultural Center | Wilberforce | Greene |
| National Aviation Hall of Fame | Riverside | Montgomery |
| National Center for Nature Photography | Berkey | Lucas |
| National Ceramic Museum and Heritage Center | Roseville | Muskingum |
| National Construction Equipment Museum | Bowling Green | Wood |
| National Heisey Glass Museum | Newark | Licking |
| National Imperial Glass Museum | Bellaire | Belmont |
| National Museum of Cambridge Glass | Cambridge | Guernsey |
| National Museum of the United States Air Force | Riverside | Montgomery |
| National Packard Museum | Warren | Trumbull |
| National Road/Zane Grey Museum | Norwich | Muskingum |
| National Underground Railroad Freedom Center | Cincinnati | Hamilton |
| National Voice of America Museum of Broadcasting | West Chester | Butler |
| Nature Center at Shaker Lakes | Cleveland | Cuyahoga |
| New Bremen Historical Museum | New Bremen | Auglaize |
| New Indian Ridge Museum | Amherst | Lorain |
| New Knoxville Heritage Center | New Knoxville | Auglaize |
| North Canton Heritage Society Museum | North Canton | Stark |
| Northern Ohio Railway Museum | Chippewa Lake | Medina |
| Northwest Franklin County Historical Society Museum | Hilliard | Franklin |
| Oak Hill Cottage Museum | Mansfield | Richland |
| Oberlin Heritage Center | Oberlin | Lorain |
| Ohio Craft Museum | Columbus | Franklin |
| Ohio Glass Museum | Lancaster | Fairfield |
| Ohio Governor's Mansion | Bexley | Franklin |
| Ohio History Center | Columbus | Franklin |
| Ohio Judicial Center Visitor Education Center | Columbus | Franklin |
| Ohio Railway Museum | Worthington | Franklin |
| Ohio River Museum | Marietta | Washington |
| Ohio Statehouse | Columbus | Franklin |
| Ohio Tobacco Museum | Ripley | Brown |
| Ohio Valley River Museum | Clarington | Monroe |
| Ohio Village | Columbus | Franklin |
| 103rd Ohio Volunteer Infantry Civil War Museum | Sheffield Lake | Lorain |
| Ohio's Small-Town Museum | Ashville | Pickaway |
| Old Brick Historical Society | Orwell | Ashtabula |
| Old Carnegie Library Museum | Pickerington | Franklin |
| Oldest Stone House Museum | Lakewood | Cuyahoga |
| Olin's Museum of Covered Bridges | Ashtabula | Ashtabula |
| Oliver Tucker Museum | Beverly | Washington |
| Orange Johnson House Museum | Worthington | Franklin |
| Orton Geological Museum | Columbus | Franklin |
| Our House | Gallipolis | Gallia |
| Overfield Tavern Museum | Troy | Miami |
| Patterson Homestead | Dayton | Montgomery |
| Paul Laurence Dunbar House | Dayton | Montgomery |
| Pennsylvania House Museum | Springfield | Clark |
| Perkins Stone Mansion | Akron | Summit |
| Perry County Historical Society | Somerset | Perry |
| Perry Historical Museum | Perry | Lake |
| Philip Moore Jr. Stone House | West Portsmouth | Scioto |
| Piatt Castles | West Liberty | Logan |
| Pickwick Building Museum | Middletown | Butler |
| Pike Heritage Museum | Waverly | Pike |
| Piqua Historical Museum | Piqua | Miami |
| Plain City Historical Society Museum | Plain City | Madison |
| Polka Hall of Fame | Euclid | Cuyahoga |
| Portage County Historical Society | Ravenna | Portage |
| Post Mark Museum | Bellevue | Huron |
| Presidential Museum (Ohio) | Williamsfield | Ashtabula |
| Price Hill Historical Society Museum | Cincinnati | Hamilton |
| Pro Football Hall of Fame | Canton | Stark |
| Promont House Museum | Milford | Clermont |
| Prospect Place | Trinway | Muskingum |
| Pyramid Hill Sculpture Park & Museum | Hamilton | Butler |
| Quaker Heritage Center | Wilmington | Clinton |
| Quigley Museum | Amherst | Lorain |
| Ragersville Historical Society | Sugarcreek | Tuscarawas |
| Reinberger Galleries | Cleveland | Cuyahoga |
| Richard Ross Museum of Art | Delaware | Delaware |
| Richland County Museum | Lexington | Richland |
| Riffe Gallery | Columbus | Franklin |
| Ripley Museum | Ripley | Brown |
| River Museum | Wellsville | Columbiana |
| Robbins Crossing | Nelsonville | Athens |
| Rock and Roll Hall of Fame | Cleveland | Cuyahoga |
| Rock Island Railroad Museum | Chillicothe | Ross |
| Rombach Place Museum | Wilmington | Clinton |
| Roscoe Village | Coshocton | Coshocton |
| Rose Hill Museum | Bay Village | Cuyahoga |
| Ross County Heritage Center | Chillicothe | Ross |
| Ross Historical Museum | Sidney | Shelby |
| Ross-Gowdy House | New Richmond | Clermont |
| Rossville Museum | Piqua | Miami |
| Rutherford B. Hayes Presidential Center | Fremont | Sandusky |
| Salem Historical Museum | Salem | Columbiana |
| Samuel Spitler House Community Museum | Brookville | Montgomery |
| Sandstone Museum Center | Amherst | Lorain |
| Sandusky County Historical Society | Fremont | Sandusky |
| Sauder Village | Archbold | Fulton |
| Sayler-Swartsel House | Eaton | Preble |
| Schoenbrunn Village | New Philadelphia | Tuscarawas |
| Schumacher Gallery | Bexley | Franklin |
| Scio Historical Museum | Scio | Harrison |
| Sculpture Center | Cleveland | Cuyahoga |
| Sedgwick House Museum | Martins Ferry | Belmont |
| Serpent Mound | Peebles | Adams |
| Shaker Museum (Ohio) | Shaker Heights | Cuyahoga |
| Shandy Hall | Geneva | Ashtabula |
| Sherman House Museum | Lancaster | Fairfield |
| Sherwood-Davidson House Museum | Newark | Licking |
| Snook's Dream Cars | Bowling Green | Wood |
| Southern Ohio Museum | Portsmouth | Scioto |
| SPACES Gallery | Cleveland | Cuyahoga |
| Spiegel Grove | Fremont | Sandusky |
| Spirit of 76 Museum | Wellington | Lorain |
| Springboro Museum Center | Springboro | Warren |
| Springfield Museum of Art | Springfield | Clark |
| Spring Hill | Massillon | Stark |
| Squire Rich House Museum | Brecksville | Cuyahoga |
| Stan Hywet Hall and Gardens | Akron | Summit |
| Steamship William G. Mather Maritime Museum | Cleveland | Cuyahoga |
| Stearns Homestead | Parma | Cuyahoga |
| Stein Galleries | Fairborn | Greene |
| Stengel True Museum | Marion | Marion |
| Stone Academy (Ohio) | Zanesville | Muskingum |
| Strock Stone House | Austintown | Mahoning |
| Strongsville Historical Village | Strongsville | Cuyahoga |
| SunWatch Indian Village | Dayton | Montgomery |
| Sutliff Museum | Warren | Trumbull |
| Taft Museum of Art | Cincinnati | Hamilton |
| Ted Lewis Museum | Circleville | Pickaway |
| Temperance Tavern & Cy Young Museum | Newcomerstown | Tuscarawas |
| Temple Museum of Religious Art | Cleveland | Cuyahoga |
| Thurber House | Columbus | Franklin |
| Tiffin Glass Museum | Tiffin | Seneca |
| Toledo Firefighters Museum | Toledo | Lucas |
| Toledo Museum of Art | Toledo | Lucas |
| Toledo, Lake Erie and Western Railway Museum | Waterville | Lucas |
| Town Hall Museum | Bedford | Cuyahoga |
| Toy and Plastic Brick Museum | Bellaire | Belmont |
| Trapshooting Hall of Fame & Museum | Vandalia | Montgomery |
| Tri-State Warbird Museum | Batavia | Clermont |
| Trotwood Depot Museum | Trotwood | Montgomery |
| Troy Hayner Cultural Center | Troy | Miami |
| Trumbull Art Gallery | Warren | Trumbull |
| TV Dinner Club Museum | Fairlawn | Summit |
| Twinsburg Historical Society | Twinsburg | Summit |
| Ukrainian Museum-Archives | Cleveland | Cuyahoga |
| Uhrichsville Clay Museum | Uhrichsville | Tuscarawas |
| Underground Railroad Museum | Flushing | Belmont |
| Union Township Heritage Association | West Milton | Miami |
| Upton House | Warren | Trumbull |
| USS Cod | Cleveland | Cuyahoga |
| USS Radford National Naval Museum | Newcomerstown | Tuscarawas |
| Uniopolis Historical Museum | Uniopolis | Auglaize |
| Van Wert County Historical Society | Van Wert | Van Wert |
| Verdin Bell and Clock Museum | Cincinnati | Hamilton |
| Versailles Area Museum | Versailles | Darke |
| Victorian House Museum | Millersburg | Holmes |
| Victorian Perambulator Museum | Jefferson | Ashtabula |
| Viets House Museum | Cortland | Trumbull |
| Ving Tsun Museum | Dayton | Montgomery |
| WACO Aircraft Museum | Troy | Miami |
| Wagnalls Memorial Museum | Lithopolis | Fairfield |
| Walter E. Terhune Gallery | Perrysburg | Wood |
| Walton House Museum | Centerville | Montgomery |
| Wapakoneta Museum | Wapakoneta | Auglaize |
| Ward-Thomas Museum | Niles | Trumbull |
| Warren County Historical Museum | Lebanon | Warren |
| Warren G. Harding House | Marion | Marion |
| Warther Carving Museum | Dover | Tuscarawas |
| War Vet Museum | Canfield | Mahoning |
| W. C. Moorhead Museum | Dover | Tuscarawas |
| Webb House Museum | Newark | Licking |
| Welsh-American Heritage Museum | Oak Hill | Jackson |
| Weltzheimer/Johnson House | Oberlin | Lorain |
| Westcott House | Springfield | Clark |
| Western Reserve Historical Society | Cleveland | Cuyahoga |
| Western Reserve Model Railroad Museum | Mentor | Lake |
| Wexner Center for the Arts | Columbus | Franklin |
| Wheeling & Lake Erie Depot | Bedford | Cuyahoga |
| Whitehouse Historical Society Museum | Whitehouse | Lucas |
| Wilderness Trail Museum | Fort Loramie | Shelby |
| Wildwood Manor House | Toledo | Lucas |
| William H. McGuffey House | Oxford | Butler |
| William Howard Taft National Historic Site | Cincinnati | Hamilton |
| William McKinley Presidential Library and Museum | Canton | Stark |
| Willis B Boyer | Toledo | Lucas |
| Wolcott House Museum Complex | Maumee | Lucas |
| Wolf Creek Grist Mill | Loudonville | Ashland |
| Wood County Historical Center & Museum | Bowling Green | Wood |
| The Works | Newark | Licking |
| Wright B Flyer Hangar | Miamisburg | Montgomery |
| Wyandot Popcorn Museum | Marion | Marion |
| Xenia Station | Xenia | Greene |
| Yoder's Amish Home | Millersburg | Holmes |
| Youngstown Historical Center of Industry and Labor | Youngstown | Mahoning |
| Zane Shawnee Caverns | Jefferson Township | Logan |
| Zanesville Museum of Art | Zanesville | Muskingum |
| Zoar Village State Memorial | Zoar | Tuscarawas |
