| Juan de Cáceres y Ulloa | |
| Order: | Organist of |
| Office: | Buenos Aires Metropolitan Cathedral |
| Predecessor: | Juan Vizcaíno de Agüero |
| Successor: | ? |
| Birth Date: | 1618 |
| Birth Place: | Buenos Aires, Viceroyalty of Peru |
| Death Date: | 1682 |
| Death Place: | Buenos Aires, Viceroyalty of Peru |
| Nationality: | Spanish |
| Occupation: | Military man |
| Profession: | Musician |
| Rank: | Captain |
Juan de Cáceres y Ulloa (1618–1682) was a Spanish nobleman and musician, who served as organist of Buenos Aires Metropolitan Cathedral.[1] He was the first musician of the Río de la Plata, together with Juan Vizcaíno de Agüero.[2]
Cáceres was born in Buenos Aires, the son of Alonso de Cáceres and María Coutinho, belonging to a noble Creole family of Spanish and Portuguese roots. His grandfather was Felipe de Cáceres, who served as interim governor of Paraguay between 1565 and 1572.[3] His mother María, was daughter of Juan López and Isabel de Melo Coutinho,[4] a noble woman descendant of Vasco Fernandes Coutinho and Pedro Álvarez Holguín de Ulloa.[5]
Juan de Cáceres y Ulloa was a disciple of Juan Vizcaíno de Agüero, organist of Cathedral of Buenos Aires.[6] He was hired in the post of organist of the Eglise, with a salary of 100 pesos a year, in replacement of Aguero.[7] He took over the organ, and the plainchant of the Cathedral, and he remained during a period of nearly 30 years.[8]