| Diocese | Type | Date Vacant | Last Bishop | Event |
|---|
| Santi Ambrogio e Carlo | Cardinal-Priest Title | 5 Aug 2017 | Dionigi Tettamanzi † | Died, Archbishop Emeritus of Milano {Milan} |
| Sant’Apollinare alle Terme Neroniane-Alessandrine | Cardinal Deaconry | 5 Jul 2018 | Jean-Louis Pierre Tauran † | Died, President of the Pontifical Council for Interreligious Dialogue |
| Santi Domenico e Sisto | Cardinal Deaconry | 31 Mar 2016 | Georges Marie Martin Cottier, O.P. † | Died |
| San Filippo Neri in Eurosia | Cardinal Deaconry | 22 Apr 2017 | Attilio Nicora † | Died, President Emeritus of the Administration of the Patrimony of the Apostolic See |
| Gesù Buon Pastore alla Montagnola | Cardinal Deaconry | 9 Sep 2017 | Velasio De Paolis, C.S. † | Died, President Emeritus of the Prefecture for the Economic Affairs of the Holy See |
| San Giovanni Evangelista a Spinaceto | Cardinal-Priest Title | 3 Jun 2018 | Miguel Obando Bravo, S.D.B. † | Died, Archbishop Emeritus of Managua |
| San Girolamo della Carità | Cardinal Deaconry | 9 Dec 2014 | Jorge María Mejía † | Died, Archivist Emeritus of the Vatican Secret Archives |
| Santa Maria in Cosmedin | Cardinal Deaconry | 26 Jun 1967 | Francesco Roberti † | Appointed, Cardinal-Priest of Santi XII Apostoli |
| Santa Maria in Portico (Campitelli) | Cardinal Deaconry | 19 Nov 2017 | Andrea Cordero Lanza di Montezemolo † | Died, Archpriest Emeritus of the Basilica di San Paolo fuori le Mura {Saint Paul Outside-the-Walls Basilica} |
| San Michele Arcangelo | Cardinal Deaconry | 12 Jun 2014 | Javier Lozano Barragán | Appointed, Cardinal-Priest of Santa Dorotea |
| Santi Nereo ed Achilleo | Cardinal-Priest Title | 28 Jul 2018 | Theodore Edgar McCarrick | Resigned |
| Santissimo Nome di Maria al Foro Traiano | Cardinal Deaconry | 18 May 2018 | Darío Castrillón Hoyos † | Died, President Emeritus of the Pontifical Commission “Ecclesia Dei” |
| Sant’Onofrio | Cardinal-Priest Title | 9 Dec 2015 | Carlo Furno † | Died, Grand Master Emeritus of the Equestrian Order of the Holy Sepulchre of Jerusalem |
| Santa Sofia a Via Boccea | Cardinal-Priest Title | 31 May 2017 | Lubomyr Husar, M.S.U. † | Died, Major Archbishop Emeritus of Kyiv-Halyč {Kiev} (Ukrainian) |
| Spirito Santo alla Ferratella | Cardinal-Priest Title | 19 Jun 2017 | Ivan Cornelius Dias † | Died, Prefect Emeritus of the Congregation for the Evangelization of Peoples |
| Santa Susanna | Cardinal-Priest Title | 20 Dec 2017 | Bernard Francis Law † | Died, Archpriest Emeritus of the Basilica di Santa Maria Maggiore {Saint Mary Major Basilica} |
| Santi Urbano e Lorenzo a Prima Porta | Cardinal Deaconry | 13 Jan 2017 | Gilberto Agustoni † | Died, Prefect Emeritus of the Apostolic Signatura |
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