This is a list of the Pennsylvania state historical markers in Armstrong County.

This is intended to be a complete list of the official state historical markers placed in Armstrong County, Pennsylvania by the Pennsylvania Historical and Museum Commission (PHMC). The locations of the historical markers, as well as the latitude and longitude coordinates as provided by the PHMC's database, are included below when available. There are 11 historical markers located in Armstrong County.^[1]

Historical markers

Marker title	Image	Date dedicated	Location	Marker type	Topics
Armstrong County		October 15, 1982	Courthouse, north end Market Street, Kittanning 40°48′58″N 79°30′59″W / 40.81598°N 79.5164°W / 40.81598; -79.5164 (Armstrong County)	City	French & Indian War, Government & Politics, Government & Politics 19th Century, Invention, Military, Native American
Blanket Hill		November 28, 1946	US 422, 6.5 miles southeast of Kittanning 40°45′54″N 79°25′00″W / 40.76488°N 79.41666°W / 40.76488; -79.41666 (Blanket Hill)	Roadside	French & Indian War, Military, Native American
Brady's Bend Works		November 28, 1946	PA 68 Brady's Bend, at Allegheny River Bridge 40°59′57″N 79°37′32″W / 40.999167°N 79.625472°W / 40.999167; -79.625472 (Brady's Bend Works)	Roadside	Business & Industry, Iron, Transportation
Fort Armstrong		November 28, 1946	PA 66, 1.8 miles south of Kittanning (MISSING)	Roadside	American Revolution, Forts, Military
General John Armstrong - PLAQUE		May 11, 1917	Mounted on Armstrong County Courthouse at entrance, north end of Market Street, Kittanning 40°48′58″N 79°30′59″W / 40.81612°N 79.5165°W / 40.81612; -79.5165 (General John Armstrong - PLAQUE)	Plaque	American Revolution, Ethnic & Immigration, Military
Kittanning		November 28, 1946	Butler Road (Bus. Route 422) & Allegheny Avenue, at bridge, Applewold 40°48′42″N 79°31′27″W / 40.8116°N 79.52406°W / 40.8116; -79.52406 (Kittanning)	Roadside	Early Settlement, French & Indian War, Military, Native American
Kittanning		November 28, 1946	At Highway garage on US 422 (South Water Street), Kittanning 40°48′30″N 79°30′57″W / 40.8084°N 79.51573°W / 40.8084; -79.51573 (Kittanning)	Roadside	Early Settlement, Native American
Kittanning or Attique Indian Town - PLAQUE		September 1, 1926	At park on east bank of Allegheny River, adjacent to bridge, North Water & Market Streets, Kittanning 40°48′49″N 79°31′17″W / 40.81358°N 79.52127°W / 40.81358; -79.52127 (Kittanning or Attique Indian Town - PLAQUE)	Plaque	Early Settlement, Native American
Nellie Bly		July 22, 1995	500 Terrace Avenue, Apollo 40°35′09″N 79°33′49″W / 40.585767°N 79.563700°W / 40.585767; -79.563700 (Nellie Bly)	City	Professions & Vocations, Publishing, Women
Pittsburgh Plate Glass Ford City Works		November 12, 2003	Third Avenue at Ninth Street, Ford City 40°46′14″N 79°31′59″W / 40.77055°N 79.533°W / 40.77055; -79.533 (Pittsburgh Plate Glass Ford City Works)	City	Business & Industry, Ethnic & Immigration, Glass, Labor
St. Patrick's Church		July 16, 1946	East Brady Road (PA 268), ~4 miles northwest of Cowansville 40°57′06″N 79°39′32″W / 40.95155°N 79.65895°W / 40.95155; -79.65895 (St. Patrick's Church)	Roadside	Buildings, Religion