| Blankenberg | |
| Type: | Ortsteil |
| Municipality: | Rosenthal am Rennsteig |
| Image Coa: | Wappen Blankenberg (Thueringen).png |
| Coordinates: | 50.4°N 54°W |
| State: | Thüringen |
| District: | Saale-Orla-Kreis |
| Elevation: | 420-555 |
| Area: | 3.74 |
| Population: | 902 |
| Stand: | 2017-12-31 |
| Postal Code: | 07366 |
| Area Code: | 036642 |
| Website: | www.gemeinde-blankenberg.de |
Blankenberg is a village and a former municipality in the district Saale-Orla-Kreis, in Thuringia, Germany. Since 1 January 2019, it is part of the municipality Rosenthal am Rennsteig.
Within the German Empire (1871-1918), Blankenberg was part of the Prussian Province of Saxony.