This is alist of Indiana state historical markers.

Interest in a statewide system ofhistorical markers for theU.S. state ofIndiana arose as the state prepared to celebrate its centenary in 1916; the Indiana Historical Commission observed the lack of a system of historical markers and memorials, and as a result of its work, many individuals, organizations, and local governments began to erect various types of memorials to commemorate historic sites. Increasing numbers of historical markers through the 1920s and 1930s prompted the Commission and its successor, theIndiana Historical Bureau, to develop statewide lists of markers, and it asked theGeneral Assembly for authority to become involved in the placement of historical markers in order to improve the numbers, quality, and topics of the markers. TheNew Deal administrations created to fight theGreat Depression of the 1930s provided the manpower for the Bureau's first effort; workers from theWorks Progress Administration produced steel signs for locations across the state, but their intentionally temporary nature meant that many had greatly deteriorated by the time that they were removed forscrap duringWorld War II.^[1]

After the war's end, state officials began to plan for a system of aluminum markers that could be expected to endure indefinitely. Although a few markers were placed privately in the first two decades after the war ended, the majority of the few markers that were erected during this time were state-funded markers to celebrate the centenary of theCivil War in the early 1960s. The state made its first substantial foray into the program in 1966 as it reached the sesquicentenary of statehood, and the Sesquicentennial Commission quickly doubled the number of state-financed markers. However, permanent financial involvement only began in 1989, when substantial funding was first granted for the purchase of markers on a long-term basis. More new markers were placed over the next fifteen years than had been placed since permanent markers were first produced in 1947.^[1] By 2024, more than 500 historic sites in 91 of thestate's 92 counties had been commemorated by an official Indiana state historical marker.^[2]

The following are tallies of current marker listings in Indiana by county. These counts are based on entries in the Indiana Historical Bureau's marker list as of March 2024.^[2] There are yearly additions to the listings and some markers may be missing or stolen.^[3]

• 
  Pivot Point, in Orange County
• 
  State Capitol, in Marion County
• 
  Williamsport, in Warren County
• 
  Farmland Downtown Historic District, in Randolph County
• 
  Burial Place of Francis Godfroy, in Miami County
• 
  Dr. Elwood Mead (1858–1936), in Switzerland County
• 
  Fountain Park Chatauqua, in Jasper County
• 
  Michigan Road, in Boone County
• 
  Whitewater Canal, in Franklin County
• 
  Monroe County's Carnegie Library, in Monroe County
• 
  Cairo Skywatch Tower, in Tippecanoe County
• 
  Brig. General Benjamin Harrison 1833–1901, in Marion County
• 
  McCurdy-Sears Building, in Vanderburgh County
• 
  First State Capital, in Harrison County

• National Register of Historic Places listings in Indiana

^ a: The Indiana Historical Bureau does not provide the year of placement for a few markers; some of these markers have a range of possible years, and others have no years at all and are presented with a question mark. For the purposes of the "Oldest" and "Newest" columns, these markers are not considered; each county's entries are those of the markers with the oldest and newest certain dates. The only exceptions are the "N/A" entries given for counties with no markers at all.

• Indiana Historical Marker Program
• Indiana Historical Bureau

• Indiana geography-related lists
• Indiana state historical markers

• Articles with short description
• Short description is different from Wikidata
• Use mdy dates from April 2025