# List of Maryland state historical markers in Saint Mary's County

This is a list of the Maryland state historical markers in Saint Mary's County.
This is intended to be a complete list of the official state historical markers placed in Saint Mary's County, Maryland by the Maryland Historical Trust (MHT). The locations of the historical markers, as well as the latitude and longitude coordinates as provided by the MHT's database, are included below. There are currently 20 historical markers located in Saint Mary's County.
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* GPX (primary coordinates)
* GPX (secondary coordinates)
| Marker title | City | Location |
| British Landing Prevented | St. George Island, Maryland | MD 249 (Piney Point Road) west side, 0.1 mile south of St. George Island Bridge 38°08′05.18″N 76°29′49.50″W﻿ / ﻿38.1347722°N 76.4970833°W﻿ / 38.1347722; -76.4970833﻿ (British Landing Prevented) |
| Cecil's Mill Historic District | Great Mills, Maryland | MD 471 (Indian Bridge Road) east side, 0.2 miles north of MD 5 (Point Lookout Road) 38°14′25.35″N 76°30′12.02″W﻿ / ﻿38.2403750°N 76.5033389°W﻿ / 38.2403750; -76.5033389﻿ (Cecil's Mill Historic District) |
| Chaptico | Chaptico, Maryland | MD 234 (Budds Creek Road) south side, 100 ft. west of MD 238 (Maddox Road) 38°22′06.46″N 76°46′57.11″W﻿ / ﻿38.3684611°N 76.7825306°W﻿ / 38.3684611; -76.7825306﻿ (Chaptico) |
| Charlotte Hall School | Charlotte Hall, Maryland | MD 5 (Three Notch Road) west side, at Charlotte Hall School Road 38°28′43.08″N 76°46′32.55″W﻿ / ﻿38.4786333°N 76.7757083°W﻿ / 38.4786333; -76.7757083﻿ (Charlotte Hall School) |
| Coole Springs of Saint Marie's Charlotte Hall, Maryland | Charlotte Hall, Maryland | Charlotte Hall Road (east side), 150 ft. south of Charlotte School Road 38°28′40.70″N 76°46′39.86″W﻿ / ﻿38.4779722°N 76.7777389°W﻿ / 38.4779722; -76.7777389﻿ (Coole Springs of Saint Marie's Charlotte Hall, Maryland) |
| De La Brook Manor | Oraville, Maryland | MD 6 (New Market Turner Road) at Delabrooke Road, northeast corner 38°26′04.22″N 76°40′59.19″W﻿ / ﻿38.4345056°N 76.6831083°W﻿ / 38.4345056; -76.6831083﻿ (De La Brook Manor) |
| Deep Falls | Clements, Maryland | MD 234 (Budds Creek Road) south side, 2.7 miles west of MD 242 (Colton Point Road) 38°21′19.62″N 76°45′38.21″W﻿ / ﻿38.3554500°N 76.7606139°W﻿ / 38.3554500; -76.7606139﻿ (Deep Falls) |
| Fenwick Manor | Hillville, Maryland | Jones Wharf Road (north side), 300 ft. east of MD 235 (Three Notch Road) 38°22′01.85″N 76°35′24.53″W﻿ / ﻿38.3671806°N 76.5901472°W﻿ / 38.3671806; -76.5901472﻿ (Fenwick Manor) |
| Leonardtown | Leonardtown, Maryland | Washington Street at MD 5 Bus. (Fenwick Street) 38°17′27.98″N 76°38′09.10″W﻿ / ﻿38.2911056°N 76.6358611°W﻿ / 38.2911056; -76.6358611﻿ (Leonardtown) |
| Manor of Cornwaleys' Cross | St. Inigoes, Maryland | MD 5 (Point Lookout Road) west side, at Loblolly Lane, 0.3 mile south of Villa Road 38°09′26.80″N 76°23′46.96″W﻿ / ﻿38.1574444°N 76.3963778°W﻿ / 38.1574444; -76.3963778﻿ (Manor of Cornwaleys' Cross) |
| Margaret Brent Pilgrimage | Lexington Park, Maryland | MD 5 (Point Lookout Road) in front of St. Mary's City post office 38°11′17″N 76°25′57″W﻿ / ﻿38.18806°N 76.43250°W﻿ / 38.18806; -76.43250﻿ (Margaret Brent Pilgrimage) |
| Mattapany | Paxtuxent River NAS, Maryland | Millstone Road (northeast side) at Mattapany Road, 0.4 miles north of Cedar Point Road 38°17′05.64″N 76°26′13.15″W﻿ / ﻿38.2849000°N 76.4369861°W﻿ / 38.2849000; -76.4369861﻿ (Mattapany) |
| Mattapany Street | St. Mary's City, Maryland | MD 5 (Point Lookout Road) west side, at Mattapany Road 38°10′59.98″N 76°25′36.42″W﻿ / ﻿38.1833278°N 76.4267833°W﻿ / 38.1833278; -76.4267833﻿ (Mattapany Street) |
| Point Lookout Prisoner-of-War Camp | Point Lookout, Maryland | MD 5 (Point Lookout Road) east side, 0.62 mile south of Lake Conoy 38°02′57.13″N 76°19′23.63″W﻿ / ﻿38.0492028°N 76.3232306°W﻿ / 38.0492028; -76.3232306﻿ (Point Lookout Prisoner-of-War Camp) |
| Saint Clement's Island | Colton's Point, Maryland | Point Breeze Road (north side), 500 ft. east of MD 242 (Colton Point Road) 38°13′28.91″N 76°45′02.22″W﻿ / ﻿38.2246972°N 76.7506167°W﻿ / 38.2246972; -76.7506167﻿ (Saint Clement's Island) |
| Saint Nicholas Church | Lexington Park, Maryland | MD 235, approx. 2 miles south of Great Mills Road 38°15′47.70″N 76°26′46.15″W﻿ / ﻿38.2632500°N 76.4461528°W﻿ / 38.2632500; -76.4461528﻿ (Saint Nicholas Church) |
| St. Joseph's Manor | California, Maryland | Town Creek Drive (south side), 130 ft. north of Harbor Lane, 1.6 miles east of MD 235 38°18′51.57″N 76°29′04.62″W﻿ / ﻿38.3143250°N 76.4846167°W﻿ / 38.3143250; -76.4846167﻿ (St. Joseph's Manor) |
| St. Mary's City - Capital of Maryland | St. Mary's City, Maryland | MD 5 (Point Lookout Road) west side, 175 ft. north of Trinity Church Road (south end) 38°11′09.75″N 76°25′54.88″W﻿ / ﻿38.1860417°N 76.4319111°W﻿ / 38.1860417; -76.4319111﻿ (St. Mary's City - Capital of Maryland) |
| St. Mary's Female Seminary | St. Mary's City, Maryland | Trinity Church Road (north side of north end), 150 ft. west of MD 5 38°11′19.28″N 76°25′57.88″W﻿ / ﻿38.1886889°N 76.4327444°W﻿ / 38.1886889; -76.4327444﻿ (St. Mary's Female Seminary) |
| Three Notch Road | Oraville, Maryland | MD 235 (Three Notch Road), 200 ft. north of Mt. Zion Church Road 38°24′42.10″N 76°40′47.02″W﻿ / ﻿38.4116944°N 76.6797278°W﻿ / 38.4116944; -76.6797278﻿ (Three Notch Road) |