| Date | Age | Event | Bishop | Title | Current Title |
|---|
| 7 Jun 2012 | 57.6 | Appointed | César Daniel Fernández | Bishop of Jujuy |
| 23 Jun 2012 | 60.0 | Confirmed | Jean-Abdo Arbach, B.C. | Archbishop of Homs (-Hama-Jabrud) (Melkite Greek), Syria |
| 26 Jun 2012 | 57.5 | Resigned | Fernando María Bargalló | Bishop of Merlo-Moreno | Bishop Emeritus |
| 75.5 | Appointed | Alcides Jorge Pedro Casaretto | Apostolic Administrator of Merlo-Moreno | Bishop Emeritus of San Isidro |
| 29 Jun 2012 | 53.6 | Appointed | Claudio Dalla Zuanna, S.C.I. | Archbishop of Beira, Mozambique |
| 6 Aug 2012 | 57.8 | Installed | César Daniel Fernández | Bishop of Jujuy |
| 31 Aug 2012 | 91.1 | Died | Lucas Luis Dónnelly Carey, O. de M. † | Prelate Emeritus of Deán Funes |
| 7 Oct 2012 | 53.9 | Ordained Bishop | Claudio Dalla Zuanna, S.C.I. | Archbishop of Beira, Mozambique |
| 10 Nov 2012 | 75.6 | Retired | José María Arancibia | Archbishop of Mendoza | Archbishop Emeritus |
| 61.2 | Appointed | Carlos María Franzini | Archbishop of Mendoza |
| 4 Dec 2012 | 57.4 | Appointed | Alberto Germán Bochatey Chaneton, O.S.A. | Auxiliary Bishop of La Plata |
| 57.4 | Appointed | Alberto Germán Bochatey Chaneton, O.S.A. | Titular Bishop of Mons in Mauretania | Auxiliary Bishop of La Plata |
| 11 Dec 2012 | 97.3 | Died | Pedro Reginaldo Lira † | Bishop Emeritus of San Francisco |
| 9 Feb 2013 | 61.4 | Installed | Carlos María Franzini | Archbishop of Mendoza |
| 21 Feb 2013 | 53.9 | Appointed | Miguel Ángel D’Annibale | Bishop of Río Gallegos |
| 56.7 | Appointed | Ramón Alfredo Dus | Archbishop of Resistencia |
| 76.4 | Retired | Fabriciano Sigampa | Archbishop of Resistencia | Archbishop Emeritus |
| 28 Feb 2013 | 55.7 | Appointed | Samuel Jofré Giraudo | Bishop of Villa María |
| 76.4 | Retired | José Ángel Rovai | Bishop of Villa María | Bishop Emeritus |
| 9 Mar 2013 | 57.6 | Ordained Bishop | Alberto Germán Bochatey Chaneton, O.S.A. | Titular Bishop of Mons in Mauretania | Auxiliary Bishop of La Plata |
| 13 Mar 2013 | 76.2 | Elected | Jorge Mario Bergoglio, S.J. | Pope (Roma {Rome}, Italy) |
| 19 Mar 2013 | 76.3 | Installed | Jorge Mario Bergoglio, S.J. | Pope (Roma {Rome}, Italy) |
| 28 Mar 2013 | 65.3 | Appointed | Mario Aurelio Poli | Archbishop of Buenos Aires |
| 17 Apr 2013 | 46.5 | Appointed | Habib Chamieh, O.M.M. | Apostolic Administrator of San Charbel en Buenos Aires (Maronite) |
| 46.5 | Appointed | Habib Chamieh, O.M.M. | Titular Bishop of Nomentum | Apostolic Administrator of San Charbel en Buenos Aires (Maronite) |
| 75.5 | Retired | Charbel Georges Merhi, M.L. | Bishop of San Charbel en Buenos Aires (Maronite) | Bishop Emeritus |
| 20 Apr 2013 | 65.4 | Installed | Mario Aurelio Poli | Archbishop of Buenos Aires |
| 3 May 2013 | 56.9 | Installed | Ramón Alfredo Dus | Archbishop of Resistencia |
| 4 May 2013 | 65.4 | Appointed | Mario Aurelio Poli | Bishop of Argentina, Faithful of the Eastern Rites | Archbishop of Buenos Aires |
| 5 May 2013 | 55.9 | Ordained Bishop | Samuel Jofré Giraudo | Bishop of Villa María |
| 6 May 2013 | 76.4 | Resigned | Alcides Jorge Pedro Casaretto | Apostolic Administrator of Merlo-Moreno | Bishop Emeritus of San Isidro |
| 64.1 | Appointed | Fernando Carlos Maletti | Bishop of Merlo-Moreno |
| 13 May 2013 | 50.8 | Appointed | Victor Manuel Fernández | Titular Archbishop of Tiburnia |
| 15 Jun 2013 | 50.9 | Ordained Bishop | Victor Manuel Fernández | Titular Archbishop of Tiburnia |
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