 | 1852 | 1853 | 1854 |  |
Date | Country | Change |
| 1853 |  Iran | Metropolitan Archdiocese of Sehna (Chaldean Rite) was established (from Metropolitan Archdiocese of Kirkuk) |
| 1853.03.04 |  Belgium | Diocese of Liège lost territory to Diocese of Roermond |
| 1853.03.04 | Belgium | Metropolitan Archdiocese of Mechelen lost territory to Diocese of ’s-Hertogenbosch and Apostolic Vicariate of Breda |
| 1853.03.04 |  Netherlands | Apostolic Administration of Haarlem was promoted as Diocese of Haarlem (became suffragan of Utrecht) |
| 1853.03.04 | Netherlands | Apostolic Vicariate of Ravenstein–Megen was suppressed (to Diocese of ’s-Hertogenbosch) |
| 1853.03.04 | Netherlands | Apostolic Vicariate of Limburg was promoted as Diocese of Roermond (gained territory from Diocese of Liège and became suffragan of Utrecht) |
| 1853.03.04 | Netherlands | Mission sui juris of Batavia was promoted as Metropolitan Archdiocese of Utrecht (with suffragan sees Haarlem, Roermond, ’s-Hertogenbosch and Breda) |
| 1853.03.04 | Netherlands | Apostolic Vicariate of ’s-Hertogenbosch was promoted as Diocese of ’s-Hertogenbosch (gained territory from Metropolitan Archdiocese of Mechelen, gained territory from the suppressed Apostolic Vicariate of Ravenstein–Megen, exchanged territory with Diocese of Liège and became suffragan of Utrecht) |
| 1853.03.14 | Netherlands | Apostolic Vicariate of Breda was promoted as Diocese of Breda |
| 1853.03.15 |  India | Apostolic Pro-Vicariate of Mangalore was promoted as Apostolic Vicariate of Mangalore |
| 1853.07.23 |  Italy | Diocese of Vasto was established (from Metropolitan Archdiocese of Chieti) |
| 1853.07.29 |  USA | Diocese of Brooklyn was established (from Metropolitan Archdiocese of New York and became suffragan of New York) |
| 1853.07.29 | USA | Diocese of Burlington was established (from Diocese of Boston and became suffragan of New York) |
| 1853.07.29 | USA | Diocese of Covington was established (from Diocese of Louisville and became suffragan of Cincinnati) |
| 1853.07.29 | USA | Diocese of Erie was established (from Diocese of Pittsburgh and became suffragan of Baltimore) |
| 1853.07.29 | USA | Diocese of Natchitoches was established (from Metropolitan Archdiocese of New Orleans and became suffragan of New Orleans) |
| 1853.07.29 | USA | Diocese of Newark was established (from Metropolitan Archdiocese of New York and Diocese of Philadelphia and became suffragan of New York) |
| 1853.07.29 | USA | Diocese of Portland in Maine was established (from Diocese of Boston and became suffragan of New York) |
| 1853.07.29 | USA | Diocese of Quincy was established (from Diocese of Chicago and became suffragan of Baltimore) |
| 1853.07.29 | USA | Metropolitan Archdiocese of San Francisco was established (from Diocese of Monterey and with suffragan see Monterey) |
| 1853.07.29 | USA | Apostolic Vicariate of New Mexico was promoted as Diocese of Santa Fe (became suffragan of Saint Louis) |
| 1853.07.29 | USA | Apostolic Vicariate of Upper Michigan was established (from Diocese of Detroit) |
| 1853.07.29 | USA | Diocese of Walla Walla was suppressed (to Diocese of Nesqually) |
| 1853.09.12 |  Martinique | Diocese of Martinique was renamed as Diocese of Saint-Pierre |
| 1853.11.26 |  Romania | Diocese of Făgăraş (Romanian Rite) was promoted as Metropolitan Archdiocese of Făgăraş (with suffragan sees Lugoj and Oradea Mare and lost territory to establish Diocese of Lugoj) |
| 1853.11.26 | Romania | Diocese of Lugoj (Romanian Rite) was established (from Diocese of Făgăraş and Diocese of Oradea Mare and became suffragan of Făgăraş) |
| 1853.12.17 | Italy | Archdiocese of Lucca lost territory to Diocese of Massa Carrara |
| 1853.12.19 | Romania | Diocese of Gherla, Armenopoli, Szamos-Ujvár (Romanian Rite) was established (from Metropolitan Archdiocese of Făgăraş and became suffragan of Făgăraş) |
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