| Birthdate | Age | Name | Current Title |
| Oldest |
| 23 Nov 1909 |
| Archbishop Jean Jadot | Pro-President Emeritus of the Secretariat of Non-Christians, Roman Curia |
| 12 Apr 1914 |
| Bishop Jan van Cauwelaert, C.I.C.M. | Bishop Emeritus of Inongo, Congo (Dem. Rep.) |
| 20 Nov 1923 |
| Archbishop Giovanni Moretti | Apostolic Nuncio Emeritus to Belgium |
| 2 Nov 1924 |
| Bishop Albert Jean Charles Ghislain Houssiau | Bishop Emeritus of Liège |
| 22 Jul 1925 |
| Bishop Paul Lanneau | Auxiliary Bishop Emeritus of Mechelen-Brussel {Malines-Brussels} |
| 27 Feb 1926 |
| Bishop Luc Alfons De Hovre, S.J. | Auxiliary Bishop Emeritus of Mechelen-Brussel {Malines-Brussels} |
| 25 Oct 1929 |
| Bishop Paul Schruers | Bishop Emeritus of Hasselt |
| 18 Mar 1932 |
| Bishop Arthur Luysterman | Bishop Emeritus of Gent {Ghent, Gand} |
| 7 Jan 1933 |
| Bishop Paul Van den Berghe | Bishop of Antwerpen {Antwerp} |
| 4 Jun 1933 |
| Godfried Cardinal Danneels | Archbishop of Mechelen-Brussel {Malines-Brussels} |
| 11 Apr 1934 |
| Archbishop Karl-Josef Rauber | Apostolic Nuncio to Belgium |
| 9 Aug 1934 |
| Archbishop Roger Pirenne | Archbishop of Bertoua, Cameroon |
| Youngest |
| 2 Apr 1957 |
| Bishop Pascal Michel Ghislain Delannoy | Auxiliary Bishop of Lille, France |
| 19 May 1952 |
| Bishop Patrick Hoogmartens | Bishop of Hasselt |
| 15 Jun 1948 |
| Bishop Pierre Warin | Auxiliary Bishop of Namur {Namen} |
| 13 Apr 1948 |
| Bishop Guy Harpigny | Bishop of Tournai {Doornik} |
| 17 Jun 1947 |
| Bishop Josef De Kesel | Auxiliary Bishop of Mechelen-Brussel {Malines-Brussels} |
| 25 Jul 1943 |
| Bishop Rémy Victor Vancottem | Auxiliary Bishop of Mechelen-Brussel {Malines-Brussels} |
| 28 Sep 1941 |
| Bishop Lucas Van Looy, S.D.B. | Bishop of Gent {Ghent, Gand} |
| 5 Dec 1940 |
| Bishop Albert Vanbuel, S.D.B. | Bishop of Kaga-Bandoro, Central African Republic |
| 6 May 1940 |
| Bishop André-Mutien Léonard | Bishop of Namur {Namen} |
| 2 Nov 1937 |
| Bishop Aloysius Jousten | Bishop of Liège |
| 19 Apr 1937 |
| Bishop Jan De Bie | Auxiliary Bishop of Mechelen-Brussel {Malines-Brussels} |
| 23 Jan 1937 |
| Archbishop Pier Luigi Celata | Secretary of the Pontifical Council for Interreligious Dialogue, Roman Curia |