| Date | Age | Event | Bishop | Title | Current Title |
|---|
| 21 Feb 2011 | 88.1 | Appointed | Jorge María Mejía | Cardinal-Priest of S. Girolamo della Carità | Cardinal, Archivist Emeritus of the Vatican Secret Archives |
| 22 Feb 2011 | 75.2 | Retired | Jorge Luis Lona | Bishop of San Luis | Bishop Emeritus |
| 55.0 | Succeeded | Pedro Daniel Martínez Perea | Bishop of San Luis |
| 7 Mar 2011 | 61.3 | Installed | Juan Alberto Puiggari | Archbishop of Paraná |
| 23 Mar 2011 | 40.9 | Selected | Sviatoslav Shevchuk | Major Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 25 Mar 2011 | 40.9 | Appointed | Sviatoslav Shevchuk | Archbishop of Kyiv {Kiev} (Ukrainian), Ukraine | Major Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 40.9 | Confirmed | Sviatoslav Shevchuk | Major Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 27 Mar 2011 | 40.9 | Installed | Sviatoslav Shevchuk | Major Archbishop of Kyiv-Halyč {Kiev} (Ukrainian), Ukraine |
| 6 Apr 2011 | 69.1 | Appointed | Antonio Marino | Bishop of Mar del Plata |
| 29 Apr 2011 | 52.1 | Ordained Bishop | Miguel Ángel D’Annibale | Titular Bishop of Nasai | Auxiliary Bishop of Río Gallegos |
| 22 May 2011 | 52.2 | Installed | Miguel Ángel D’Annibale | Auxiliary Bishop of Río Gallegos |
| 4 Jun 2011 | 69.2 | Installed | Antonio Marino | Bishop of Mar del Plata |
| 10 Jun 2011 | 76.7 | Retired | Luis Héctor Villalba | Archbishop of Tucumán | Archbishop Emeritus |
| 61.7 | Appointed | Alfredo Horacio Zecca | Archbishop of Tucumán |
| 11 Jun 2011 | 89.8 | Died | Raúl Marcelo Pacífico Scozzina, O.F.M. † | Bishop Emeritus of Formosa |
| 22 Jun 2011 | 81.0 | Died | Carmelo Juan Giaquinta † | Archbishop Emeritus of Resistencia |
| 59.3 | Appointed | Daniel Kozelinski Netto | Apostolic Administrator of Santa María del Patrocinio en Buenos Aires (Ukrainian) |
| 18 Aug 2011 | 61.9 | Ordained Bishop | Alfredo Horacio Zecca | Archbishop of Tucumán |
| 25 Aug 2011 | 56.8 | Appointed | César Daniel Fernández | Apostolic Administrator of Jujuy | Auxiliary Bishop of Paraná |
| 2 Sep 2011 | 91.4 | Died | José María Montes † | Bishop Emeritus of Chascomús |
| 17 Sep 2011 | 62.0 | Installed | Alfredo Horacio Zecca | Archbishop of Tucumán |
| 18 Sep 2011 | 68.0 | Died | Marcelino Palentini, S.C.I. † | Bishop of Jujuy |
| 12 Oct 2011 | 75.5 | Retired | Luis Teodorico Stöckler | Bishop of Quilmes | Bishop Emeritus |
| 60.1 | Appointed | Carlos José Tissera | Bishop of Quilmes |
| 47.9 | Appointed | Gustavo Gabriel Zurbriggen | Coadjutor Prelate of Deán Funes |
| 3 Nov 2011 | 82.1 | Died | Justo Oscar Laguna † | Bishop Emeritus of Morón |
| 8 Nov 2011 | 69.5 | Succeeded | Virginio Domingo Bressanelli, S.C.I. | Bishop of Neuquén |
| 73.1 | Resigned | Marcelo Angiolo Melani, S.D.B. | Bishop of Neuquén | Bishop Emeritus |
| 15 Nov 2011 | 69.3 | Appointed | Adriano Bernardini | Apostolic Nuncio to Italy |
| 69.3 | Appointed | Adriano Bernardini | Apostolic Nuncio to San Marino | Apostolic Nuncio to Italy |
| 21 Nov 2011 | 76.2 | Appointed | Santos Abril y Castelló | Archpriest of the Basilica di Santa Maria Maggiore {Saint Mary Major Basilica} | Vice-Chamberlain of the Apostolic Chamber |
| 9 Dec 2011 | 48.0 | Ordained Bishop | Gustavo Gabriel Zurbriggen | Coadjutor Prelate of Deán Funes |
| 17 Dec 2011 | 60.3 | Installed | Carlos José Tissera | Bishop of Quilmes |
| 30 Dec 2011 | 75.0 | Retired | Alcides Jorge Pedro Casaretto | Bishop of San Isidro | Bishop Emeritus |
| 65.2 | Succeeded | Óscar Vicente Ojea Quintana | Bishop of San Isidro |
| 5 Jan 2012 | 64.9 | Appointed | Emil Paul Tscherrig | Apostolic Nuncio to Argentina |
| 18 Feb 2012 | 76.4 | Elevated to Cardinal | Santos Abril y Castelló | Vice-Chamberlain of the Apostolic Chamber |
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