List of Maryland state historical markers
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File:Holloway Hall Historical Marker.jpg]]
This is a list of Maryland State Historical Markers which were first placed in Maryland in 1930. The Maryland Department of Transportation (MDOT), in partnership with the Maryland Historical Trust (MHT), reviews marker applications while the MDOT Maryland State Highway Administration (SHA) funds, installs, and maintains the markers along state roads and property. {{cite web |title=Introduction |url=https://www.mdot.maryland.gov/tso/pages/Index.aspx?PageId=201 |website=Maryland's Historical Markers}} The current program was launched in 1933 due to an explosion of automobile ownership within the state.{{cite web |title=History of Maryland's Roadside Historical Marker Program |url=https://web.archive.org/web/20230806001537/https://mht.maryland.gov/historicalmarkers/History.aspx |website=Maryland's Historical Markers |accessdate=December 11, 2024}} There were 766 markers as of October 2020.{{cite web |title=Search Results |url=https://mht.maryland.gov/historicalmarkers/SearchResults.aspx |website=Maryland's Historical Markers |accessdate=13 October 2020}}
Markers by county
| class="wikitable sortable"
!scope="col" | County !scope="col" | Sites |
| scope="row"| Allegany
|style="text-align: right"| 22 |
|---|
| scope="row"| Anne Arundel
|style="text-align: right"| 48 |
| scope="row"| Baltimore City
|style="text-align: right"| 28 |
| scope="row"| Baltimore County
|style="text-align: right"| 77 |
| scope="row"| Calvert
|style="text-align: right"| 30 |
| scope="row"| Caroline
|style="text-align: right"| 13 |
| scope="row"| Carroll
|style="text-align: right"| 20 |
| scope="row"| Cecil
|style="text-align: right"| 71 |
| scope="row"| Charles
|style="text-align: right"| 49 |
| scope="row"| Dorchester
|style="text-align: right"| 19 |
| scope="row"| Frederick
|style="text-align: right"| 24 |
| scope="row"| Garrett
|style="text-align: right"| 19 |
| scope="row"| Harford
|style="text-align: right"| 51 |
| scope="row"| Howard
|style="text-align: right"| 19 |
| scope="row"| Kent
|style="text-align: right"| 22 |
| scope="row"| Montgomery
|style="text-align: right"| 22 |
| scope="row"| Prince George's
|style="text-align: right"| 59 |
| scope="row"| Queen Anne's
|style="text-align: right"| 29 |
| scope="row"| Saint Mary's
|style="text-align: right"| 20 |
| scope="row"| Somerset
|style="text-align: right"| 26 |
| scope="row"| Talbot
|style="text-align: right"| 30 |
| scope="row"| Washington
|style="text-align: right"| 43 |
| scope="row"| Wicomico
|style="text-align: right"| 15 |
| scope="row"| Worcester
|style="text-align: right"| 10 |
| class="sortbottom"
!scope="row"| Total |style="text-align: right; font-weight: bold"| 766 |