| Our Lady of Mercy Church of Buenos Aires | |
| Native Name: | Basílica de Nuestra Señora de la Merced de Buenos Aires |
| Native Name Lang: | es |
| Religious Affiliation: | Roman Catholic |
| Location: | Reconquista 207, Buenos Aires |
| Rite: | Catholic |
| Festivals: | --> |
| District: | Buenos Aires |
| Country: | Argentina |
| Organizational Status: | --> |
| Functional Status: | Order of Mercy |
| Patron: | Virgin of Mercy |
| Architect: | Giovanni Battista Primoli Giovanni Andrea Bianchi Mario Buschiazzo |
| Architecture Type: | Eclecticism |
| Established: | 1603 |
| Year Completed: | 1900 |
| Date Destroyed: | --> |
| Elevation Ft: | --> |
Our Lady of Mercy Church of Buenos Aires (Spanish; Castilian: Basílica de Nuestra Señora de la Merced de Buenos Aires) is an Argentine Catholic church. It is located on Calle Reconquista corner of Tte. Gen. Juan Domingo Perón Street, in the neighborhood of San Nicolas in Buenos Aires.
The church was originally designed by Italian architects and, who started the construction works around 1721. The current façade is the work of the architect Mario Buschiazzo, who completed the remodeling in 1900.
Like other religious buildings of the time, the church also had a cemetery, where a large number of Buenos Aires residents, politicians and soldiers were buried. Curiously, the Merced Cemetery was located in the place where the Anglican Cathedral of St. John the Baptist of Buenos Aires was built in 1830.