| Tantallon | |
| Settlement Type: | Unincorporated community and former Census-designated place (CDP) |
| Pushpin Map: | USA Maryland#USA |
| Pushpin Map Caption: | Location within the state of Maryland |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Maryland |
| Subdivision Type2: | County |
| Subdivision Name2: | Prince Georges |
| Unit Pref: | Imperial |
| Population As Of: | 1980 |
| Population Total: | 9945 |
| Population Density Km2: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 39 |
| Coordinates: | 38.7239°N -77.0167°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 20744 |
| Blank Name: | FIPS code |
| Blank Info: | 24-76825[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 598151[2] |
Tantallon is an unincorporated community in Prince George's County, Maryland, United States, and is a part of the census-designated place (CDP) of Fort Washington.[3] The ZIP code for the community is 20744. Tantallon reported as a census-designated place by the U.S. Census Bureau in 1980.[4] The population recorded was 9,945.[5] Tantallon began in the 1960s as a country-club community of homes in a variety of architectural styles, and includes an 18-hole golf course, boat marina, and private swimming pool. It was named after Tantallon Castle in Scotland. Some homes have frontage on inlets of the Potomac River. It is governed by the Tantallon Citizens Association. The adjacent Hatton Point area, as well as nearby historic Fort Washington National Park, have very scenic views of the river. The bi-county parks commission's Harmony Hall Recreation Center, and metrobus commuter service to Washington, D.C., are nearby.
Tantallon is located at 38.7 degrees north, 77.0 degrees west (38.724, −77.01);[6] or approximately 12 miles south-southeast of Washington, D.C.[7] The elevation for the community is 39 feet above sea level.
The community of Tantallon is served by the Prince George's County Public Schools system, and is zoned for Friendly High School.