| Date | Age | Event | Bishop | Title | Current Title |
|---|
| 20 Sep 2003 | 51.0 | Appointed | Salvatore Pennacchio | Apostolic Nuncio to Thailand |
| 51.0 | Appointed | Salvatore Pennacchio | Apostolic Nuncio to Singapore | Apostolic Nuncio to Thailand |
| 51.0 | Appointed | Salvatore Pennacchio | Apostolic Nuncio to Cambodia | Apostolic Nuncio to Thailand |
| 51.0 | Appointed | Salvatore Pennacchio | Apostolic Delegate to Myanmar | Apostolic Nuncio to Thailand |
| 51.0 | Appointed | Salvatore Pennacchio | Apostolic Delegate to Laos | Apostolic Nuncio to Thailand |
| 51.0 | Appointed | Salvatore Pennacchio | Apostolic Delegate to Malaysia | Apostolic Nuncio to Thailand |
| 51.0 | Appointed | Salvatore Pennacchio | Apostolic Delegate to Brunei Darussalam | Apostolic Nuncio to Thailand |
| 21 Oct 2003 | 70.9 | Appointed | Renato Raffaele Martino | Cardinal-Deacon of S. Francesco di Paola ai Monti | Cardinal, President Emeritus of the Pontifical Council for Justice and Peace |
| 70.9 | Elevated to Cardinal | Renato Raffaele Martino | Cardinal, President Emeritus of the Pontifical Council for Justice and Peace |
| 14 May 2004 | 75.7 | Retired | Lawrence Khai Saen-Phon-On † | Archbishop of Thare and Nonseng | Archbishop Emeritus |
| 9 Oct 2004 | 58.7 | Appointed | Joseph Prathan Sridarunsil, S.D.B. | Bishop of Surat Thani |
| 28 Nov 2004 | 58.8 | Ordained Bishop | Joseph Prathan Sridarunsil, S.D.B. | Bishop of Surat Thani |
| 18 Mar 2005 | 55.3 | Appointed | John Bosco Panya Kritcharoen | Bishop of Ratchaburi |
| 2 Apr 2005 | 72.4 | Ceased | Renato Raffaele Martino | President of the Pontifical Council for Justice and Peace | Cardinal, President Emeritus |
| 21 Apr 2005 | 72.4 | Confirmed | Renato Raffaele Martino | President of the Pontifical Council for Justice and Peace | Cardinal, President Emeritus |
| 28 May 2005 | 55.4 | Ordained Bishop | John Bosco Panya Kritcharoen | Bishop of Ratchaburi |
| 1 Jul 2005 | 62.7 | Appointed | Louis Chamniern Santisukniram | Archbishop of Thare and Nonseng |
| 20 Aug 2005 | 62.8 | Installed | Louis Chamniern Santisukniram | Archbishop of Thare and Nonseng |
| 11 Mar 2006 | 73.3 | Appointed | Renato Raffaele Martino | President of the Pontifical Council for Pastoral Care of Migrants and Itinerant People | Cardinal, President Emeritus of the Pontifical Council for Justice and Peace |
| 25 Mar 2006 | 61.2 | Appointed | Philip Banchong Chaiyara, C.SS.R. | Bishop of Ubon Ratchathani |
| 77.0 | Retired | Michael Bunluen Mansap | Bishop of Ubon Ratchathani | Bishop Emeritus |
| 27 Jun 2006 | 61.4 | Ordained Bishop | Philip Banchong Chaiyara, C.SS.R. | Bishop of Ubon Ratchathani |
| 30 Nov 2006 | 77.4 | Retired | Joachim Phayao Manisap † | Bishop of Nakhon Ratchasima | Bishop Emeritus |
| 50.8 | Appointed | Joseph Chusak Sirisut | Bishop of Nakhon Ratchasima |
| 10 Feb 2007 | 51.0 | Ordained Bishop | Joseph Chusak Sirisut | Bishop of Nakhon Ratchasima |
| 7 Mar 2007 | 57.7 | Appointed | Francis Xavier Kriengsak Kovithavanij | Bishop of Nakhon Sawan | Archbishop of Bangkok |
| 2 Jun 2007 | 57.9 | Ordained Bishop | Francis Xavier Kriengsak Kovithavanij | Bishop of Nakhon Sawan | Archbishop of Bangkok |
| 24 Jul 2007 | 78.9 | Died | Lawrence Khai Saen-Phon-On † | Archbishop Emeritus of Thare and Nonseng |
| 3 Nov 2007 | 78.3 | Died | Joachim Phayao Manisap † | Bishop Emeritus of Nakhon Ratchasima |
| 21 Jan 2009 | 99.2 | Died | Jean Jadot † | Pro-President Emeritus of the Secretariat of Non-Christians |
| 10 Feb 2009 | 53.4 | Appointed | Francis Xavier Vira Arpondratana | Bishop of Chiang Mai |
| 73.5 | Resigned | Joseph Sangval Surasarang | Bishop of Chiang Mai | Bishop Emeritus |
| 28 Feb 2009 | 76.3 | Retired | Renato Raffaele Martino | President of the Pontifical Council for Pastoral Care of Migrants and Itinerant People | Cardinal, President Emeritus of the Pontifical Council for Justice and Peace |
| 4 Apr 2009 | 49.3 | Appointed | Silvio Siripong Charatsri | Bishop of Chanthaburi |
| 77.4 | Retired | Lawrence Thienchai Samanchit | Bishop of Chanthaburi | Bishop Emeritus |
| 1 May 2009 | 53.6 | Ordained Bishop | Francis Xavier Vira Arpondratana | Bishop of Chiang Mai |
| 14 May 2009 | 80.3 | Retired | Michael Michai Kitbunchu | Archbishop of Bangkok | Cardinal, Archbishop Emeritus |
| 59.9 | Appointed | Francis Xavier Kriengsak Kovithavanij | Archbishop of Bangkok |
| 19 Jun 2009 | 63.0 | Appointed | Joseph Pibul Visitnondachai | Bishop of Nakhon Sawan |
| 4 Jul 2009 | 49.6 | Ordained Bishop | Silvio Siripong Charatsri | Bishop of Chanthaburi |
| 16 Aug 2009 | 60.1 | Installed | Francis Xavier Kriengsak Kovithavanij | Archbishop of Bangkok |
| 12 Sep 2009 | 63.3 | Ordained Bishop | Joseph Pibul Visitnondachai | Bishop of Nakhon Sawan |
| 24 Oct 2009 | 76.9 | Retired | Renato Raffaele Martino | President of the Pontifical Council for Justice and Peace | Cardinal, President Emeritus |
| 14 Nov 2009 | 76.8 | Retired | George Yod Phimphisan, C.SS.R. | Bishop of Udon Thani | Bishop Emeritus |
| 46.9 | Appointed | Joseph Luechai Thatwisai | Bishop of Udon Thani |
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