| Date of Death | Deceased Cardinals (32) |
| 1660.08.20 | Cardinal-Priest of S. Balbina (1644.10.17 – 1660.08.20) Camerlengo emeritus of Sacred College of Cardinals (1657.01.15 – 1658.01.14) |
| 1660.09.30 | Cardinal-Priest of S. Marco (1658.04.01 – 1660.09.30) |
| 1660.12.06 | Cardinal-Priest of S. Callisto (1660.07.19 – 1660.12.06) |
| 1661.03.09 | |
| 1661.07.09 | Cardinal-Priest of S. Giovanni a Porta Latina (1657.04.23 – 1661.07.09) Prefect of Sacred Congregation of the Council (1657.04.09 – 1661.07.09) |
| 1661.11.10 | Cardinal-Bishop of Palestrina (1655.10.11 – 1661.11.10) Camerlengo emeritus of Sacred College of Cardinals (1638.01.15 – 1639.01.10?) |
| 1661.12.01 | Bishop of Regensburg (Germany) (1649.04.12 – 1661.12.01) Bishop of Osnabrück (Germany) ([1625.10.27] 1627.01.27 – 1661.12.01) Vicar Apostolic of Bremen (Germany) (1645.05.04 – 1661.12.01) |
| 1662.08.08 | Cardinal-Priest of Ss. Quirico e Giulitta (1643.08.31 – 1662.08.08) Master of Papal Chamber emeritus of Prefecture of the Holy Apostolic Palaces (1635.01.01 – 1643.07.13) |
| 1663.01.23 | Cardinal-Deacon of S. Giorgio in Velabro (1656.03.06 – 1663.01.23) |
| 1663.06.28 | Cardinal-Bishop of Sabina (1655.10.11 – 1663.06.28) Prefect of Sacred Congregation of the Council (1661.07.28 – 1663.06.28) |
| 1663.08.27 | Cardinal-Priest of S. Eusebio (1657.04.23 – 1663.08.27) Archbishop-Bishop emeritus of Senigallia (Italy) (1657.05.28 – 1659.09.01) |
| 1663.12.21 | Cardinal-Priest of S. Pietro in Montorio (1650.10.17 – 1663.12.21) |
| 1665.01.21 | Cardinal-Priest of Ss. Nereo ed Achilleo (1658.04.01 – 1665.01.21) |
| 1665.09.17 | Cardinal-Priest of S. Croce in Gerusalemme (1630.08.12 – 1665.09.17) Metropolitan Archbishop of Toledo (Spain) (1646.05.28 – 1665.09.17) |
| 1666.01.17 | Cardinal-Priest of S. Maria in Traspontina (1652.03.12 – 1666.01.17) Bishop emeritus of Jesi (Italy) (1653.04.21 – 1656.04.24) Datary of His Holiness of Apostolic Dataria (1655.04.10 – 1666.01.17) |
| 1666.02.08 | Cardinal-Priest of S. Maria della Pace (1639.12.19 – 1666.02.08) Bishop emeritus of Lucca (Italy) (1637.03.30 – 1645.07.31) Camerlengo emeritus of Sacred College of Cardinals (1650.01.10 – 1651.01.09) |
| 1666.06.17 | Cardinal-Bishop of Ostia–Velletri (1652.09.23 – 1666.06.17) Provost emeritus of Santo Stefano di Prato (Italy) (1619 – 1653) |
| 1666.07.26 | Cardinal-Deacon emeritus of S. Maria in Domnica (1644.12.12 – 1647.01.21) |
| 1666.09.04 | Cardinal-Bishop of Frascati (1661.11.21 – 1666.09.04) Archpriest of Papal Archbasilica of Saint John Lateran (1628 – 1666.09.04) |
| 1666.11.03 | Cardinal-Priest of S. Maria in Ara Coeli (1642.02.10 – 1666.11.03) Metropolitan Archbishop of Napoli (Italy) (1641.12.16 – 1666.11.03) |
| 1667.02.16 | Cardinal-Priest of S. Clemente (1642.02.10 – 1667.02.16) Metropolitan Archbishop emeritus of Benevento (Italy) (1642.01.13 – 1643.05.18) Camerlengo emeritus of Sacred College of Cardinals (1652.01.08 – 1653.01.08) |
| 1667.06.05 | Cardinal-Priest of S. Martino ai Monti (1660.04.19 – 1667.06.05) Patriarch emeritus of Constantinople (1658.06.03 – 1660.04.05) Prefect emeritus of Prefecture of the Holy Apostolic Palaces (1658.06.05 – 1660.04.05) Master of Papal Chamber emeritus of Prefecture of the Holy Apostolic Palaces (1658.06.05 – 1660.04.05) |
| 1667.06.05 | Cardinal-Priest of S. Salvatore in Lauro (1660.12.06 – 1667.06.05) |
| 1667.07.11 | Cardinal-Priest of S. Lorenzo in Lucina (1666.10.11 – 1667.07.11) Metropolitan Archbishop emeritus of Genova (Italy) (1635.03.05 – 1664.10) |
| 1667.07.31 | Cardinal-Deacon of Ss. Cosma e Damiano (1660.04.19 – 1667.07.31) |
| 1667.10.25 | Cardinal-Priest of S. Lorenzo in Lucina (1667.07.18 – 1667.10.25) Bishop of Trento (Italy) (1665.07.31 – 1667.10.25) Metropolitan Archbishop of Praha (Czechia) ([1622.11.09] 1623.01.06 – 1667.10.25) Grand Master of Knights of the Cross with the Red Star (1623.01.06 – 1667.10.25) |
| 1668.01.22 | Cardinal-Bishop of Frascati (1666.10.11 – 1668.01.22) Camerlengo emeritus of Sacred College of Cardinals (1647.01.07 – 1648.01.13) |
| 1668.02.18 | Cardinal-Priest of S. Agnese fuori le mura (1658.05.06 – 1668.02.18) Prefect emeritus of Prefecture of the Holy Apostolic Palaces (1655.07.16 – 1658.04.29) |
| 1668.06.01 | Bishop of Regensburg (Germany) (1667.03.07 – 1668.06.01) |
| 1668.09.16 | Cardinal-Priest of S. Eusebio (1668.04.30 – 1668.09.16) |
| 1669.08.12 | Cardinal-Deacon of S. Maria in Portico (1667.07.18 – 1669.08.12) |
| 1669.11.26 | Cardinal-Deacon of S. Agata alla Suburra (1655.05.14 – 1669.11.26) |
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