| Brestenberg Castle | |
| Built: | 1625 |
| Condition: | preserved |
| Location: | Seengen |
| Coordinates: | 47.3199°N 8.2082°W |
| Map Type: | Switzerland |
| Code: | CH-AG |
Brestenberg Castle (German: Schloss Brestenberg) is a castle and manor house near the municipality of Seengen in the canton of Aargau, Switzerland. It is open to the public and today houses a museum and a cafe.