| Date of Death | Deceased Persons (16) |
| 2004 | Superior General of Congregation of the Augustinians of the Assumption (Assumptionists) (1952 – 1969) |
| 2004 | Apostolic Administrator of Siping 四平 (China) (1954.04.02 – ?) |
| 2004.01.01 | |
| 2004.01.23 | Prefect Apostolic of Guinea-Bissau (Guinea-Bissau) (1966.04.04 – 1977) |
| 2004.01.25 | Superior General of Congregation of Mariannhill Missionaries (2002.06 – 2004.01.25) |
| 2004.04.10 | |
| 2004.04.20 | Prior General of Rosarian Fathers (1988 – 2000) |
| 2004.06.06 | Prefect Apostolic of Kompong Cham (Cambodia) (1968.09.26 – 1997) |
| 2004.06.19 | President of American-Cassinese Benedictine Congregation (1983 – 1989.06) |
| 2004.08.04 | Priest of Legnica (Poland) (? – 2004.08.04) Chaplain of His Holiness (1995.03.15 – 2004.08.04) |
| 2004.08.09 | Priest of Fréjus–Toulon (France) (? – 2004.08.09) Prelate of Honour of His Holiness (1972.06.21 – 1994.04.29) President of Pontifical Committee for Historical Sciences (1989 – 1998) Protonotary Apostolic Supernumerary (1994.04.29 – 2004.08.09) President of Pontifical Roman Academy of Archaeology (1995 – 2003) |
| 2004.09.11 | Apostolic Administrator of Pangkal-Pinang (Indonesia) (1979 – 1987.03.30) |
| 2004.10.14 | |
| 2004.12.01 | Priest of Bergamo (Italy) (1931.05.30 – 2004.12.01) Protonotary Apostolic Supernumerary (1984.11.13 – 2004.12.01) |
| 2004.12.06 | Founder of Institute Id of Christ the Redeemer (Idente Missionaries) (1959) |
| 2004.12.09 | Superior General of Missionary Oblates of Mary Immaculate (Oblates) (1972.05.09 – 1974.06) |
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