| Native Name: | Burgstall Thüngfelderstein Burg Eberhardstein |
| Built: | 12th century |
| Type: | Hill castle, moat |
| Condition: | burgstall (no above-ground ruins) |
| Location: | Gößweinstein-Morschreuth |
| Coordinates: | 49.7441°N 11.2485°W |
| Map Type: | Germany |
| Code: | DE-BY |
The ruins of Thüngfelderstein Castle (German: Burgstall Thüngfelderstein), also called Eberhardstein Castle (Burg Eberhardstein), are the burgstall of a demolished hill castle on a block of rock near Morschreuth in the south German state of Bavaria. The site lies within the market municipality of Gößweinstein in the county of Forchheim.
The castle was built in the 12th century by the lords of Thüngfeld; in 1154, for example, an Eberjard von Thüngfeld is mentioned.
Of the former tower castle only a moat has survived.