| Cathedral Church of the Armed Forces | |
| Other Name: | Iglesia del Sacramento |
| Native Name: | Iglesia Catedral de las Fuerzas Armadas |
| Native Name Lang: | es |
| Location: | Madrid |
| Country: | Spain |
| Denomination: | Catholic Church |
| Address: | , 9 |
| Status: | Cathedral |
| Founded Date: | 1615 |
| Architectural Type: | Church architecture |
| Style: | Spanish Baroque |
| Years Built: | 1671 |
| Archdiocese: | Military Archbishopric of Spain |
The Cathedral Church of the Armed Forces (Spanish; Castilian: Iglesia Catedral de las Fuerzas Armadas), commonly known as Iglesia del Sacramento (Spanish for 'Church of the Sacrament'), is a 17th-century Baroque-style Catholic church located in Madrid, Spain. Since 1980 is the Military Cathedral of Spain and the seat of the Military Archbishop of Spain. It was declared Bien de Interés Cultural in 1982.