Roman Catholic Diocese of San Miguel (Argentina)

The Roman Catholic Diocese of San Miguel is a suffragan diocese of the Buenos Aires. It was established by Pope Paul VI on 11 July 1978.

Ordinaries

 * Horacio Alberto Bózzoli (1978–1983), appointed Archbishop of Tucumán
 * José Manuel Lorenzo (1983–1994)
 * Abelardo Francisco Silva (1994–2000)
 * José Luis Mollaghan (2000–2005), appointed Archbishop of Rosario
 * Sergio Alfredo Fenoy (2006–2018), appointed Archbishop of Santa Fe de la Vera Cruz
 * Damián Nannini (2018–present)

Coadjutor bishop

 * Abelardo Francisco Silva (1994)

Other priest of this diocese who became bishop

 * Nicolás Baisi, appointed Auxiliary Bishop of La Plata in 2010