| Castle of Doña Blanca | |
| Native Name: | Castillo de Doña Blanca |
| Native Language: | Spanish |
| Coordinates: | 36.6279°N -6.1616°W |
| Location: | Puerto de Santa María, Spain |
| Designation1: | Spain |
| Designation1 Offname: | Castillo de Doña Blanca |
| Designation1 Type: | Non-movable |
| Designation1 Criteria: | Monument |
| Designation1 Date: | 1993 |
| Designation1 Number: | RI-51-0007619 |
The Castle of Doña Blanca (Spanish: Castillo de Doña Blanca) is a castle located in Puerto de Santa María, Spain. It was declared Bien de Interés Cultural in 1993.