| Fagnolle Castle | |
| Location: | Wallonia, Belgium |
| Type: | Castle |
| Built: | 12th century |
| Condition: | ruined |
Fagnolle Castle (French: Château de Fagnolle) is a castle located in the district of Fagnolle, in the municipality of Philippeville, Wallonia, Belgium, and in the Fagne region. The castle was formerly the centre of government of the small independent Barony, later County, of Fagnolle. It was constructed in the 12th century, and is now ruined.