| Caherduff Castle | |
| Native Name: | Caisleán na Cathrach Duibhe |
| Native Language: | ga |
| Coordinates: | 53.5522°N -9.2447°W |
| Location: | Caherduff, Cong, County Mayo, Ireland |
| Owner: | State |
| Type: | tower house |
| Designation1: | National Monument of Ireland |
| Designation1 Offname: | Caherduff Castle |
| Designation1 Number: | 244 |
Caherduff Castle [1] is a tower house and National Monument located near Cong, Ireland.[2]
Caherduff Castle is located north of Lough Corrib, 2.1km (01.3miles) northwest of Cross, County Mayo.
Caherduff Castle was acquired by the Irish state in 1918.[3]