| Real Casa de la Aduana | |
| Native Name: | Real Casa de la Aduana |
| Native Language: | Spanish |
| Coordinates: | 40.4173°N -3.7018°W |
| Location: | Madrid, Spain |
| Architect: | Francesco Sabatini |
| Designation1: | Spain |
| Designation1 Offname: | Real Casa de la Aduana |
| Designation1 Type: | Non-movable |
| Designation1 Criteria: | Monument |
| Designation1 Date: | 1998 |
| Designation1 Number: | RI-51-0010190 |
The Real Casa de la Aduana (Spanish: Real Casa de la Aduana means royal customs house) is the headquarters of Spain's Ministry of Economy and Ministry of the Treasury.It is located on Madrid's longest street, the Calle de Alcalá.
The eighteenth-century building has been modified over the years. It was declared Bien de Interés Cultural in 1998.