 | 1906 | 1907 | 1908 |  |
Date | Country | Change |
| 1907 |  Syria | Titular Archiepiscopal See of Laodicea (Greek-Melkite Rite) was renamed as Titular Archiepiscopal See of Laodicea |
| 1907.03.25 |  Argentina | Diocese of Santiago del Estero was restored (from Diocese of Tucumán and became suffragan of Buenos Aires) |
| 1907.04.22 |  Congo-Brazzaville | Apostolic Vicariate of Bas-Congo français was renamed as Apostolic Vicariate of Loango |
| 1907.08.15 |  Brazil | Abbacy nullius of Nossa Senhora do Monserrate do Rio de Janeiro was established (from Metropolitan Archdiocese of São Sebastião do Rio de Janeiro and Diocese of Amazonas and without ecclesiastical province) |
| 1907.09.08 | Brazil | Diocese of Campanha was established (from Diocese of Pouso Alegre and Diocese of São Paulo and became suffragan of Mariana) |
| 1907.09.11 |  USA | Diocese of Nesqually was suppressed (to establish Diocese of Seattle) |
| 1907.09.11 | USA | Diocese of Seattle was established (from the suppressed Diocese of Nesqually and became suffragan of Oregon City) |
| 1907.09.29 | Brazil | Diocese of Uberaba was established (from Diocese of Diamantina and Diocese of Goiás and became suffragan of Mariana) |
| 1907.12.02 |  Canada | Apostolic Vicariate of Saskatchewan was promoted as Diocese of Prince Albert |
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