UEFA Champions League 2009/10, Second qualifying round |
 | 22.07.2009 |  | Glentoran | – | Maccabi Haifa |  | 0:4 (0:1) |
| Belfast |
UEFA Champions League 2009/10, Second qualifying round |
| 15.07.2009 | | Maccabi Haifa | – | Glentoran | | 6:0 (1:0) |
| Haifa |
UEFA Champions League 2005/06, First Qualifying Round |
| 20.07.2005 |  | Shelbourne | – | Glentoran | | 4:1 (2:1) |
| Dublin |
UEFA Champions League 2005/06, First Qualifying Round |
| 13.07.2005 | | Glentoran | – | Shelbourne | | 1:2 (0:0) |
| Belfast |
UEFA Champions League 2003/04, First Qualifying Round |
| 23.07.2003 |  | HJK | – | Glentoran | | 1:0 (0:0) |
| Vantaa |
UEFA Champions League 2003/04, First Qualifying Round |
| 16.07.2003 | | Glentoran | – | HJK | | 0:0 |
| Belfast |
UEFA Champions League 1999/00, First Qualifying Round |
| 21.07.1999 | | Glentoran | – | Liteks |  | 0:2 (0:0) |
| Belfast |
UEFA Champions League 1999/00, First Qualifying Round |
| 14.07.1999 | | Liteks | – | Glentoran | | 3:0 (2:0) |
| Lovech |
UEFA Champions League 1992/93, 1/16 finals |
| 30.09.1992 |  | Marseille | – | Glentoran | | 3:0 (2:0) |
| Marseille |
UEFA Champions League 1992/93, 1/16 finals |
| 16.09.1992 | | Glentoran | – | Marseille | | 0:5 (0:4) |
| Belfast |
UEFA European Champions' Cup 1988/89, 1/16 finals |
| 05.10.1988 | | Glentoran | – | Spartak Moscow |  | 1:1 (1:0) |
| Belfast |
UEFA European Champions' Cup 1988/89, 1/16 finals |
| 07.09.1988 | | Spartak Moscow | – | Glentoran | | 2:0 (0:0) |
 | Moscow |
UEFA European Champions' Cup 1981/82, 1/8 finals |
| 04.11.1981 | | Glentoran | – | CSKA Sofia | | 2:1 aet
(0:0, 2:0) |
| Belfast |
UEFA European Champions' Cup 1981/82, 1/8 finals |
| 21.10.1981 | | CSKA Sofia | – | Glentoran | | 2:0 (2:0) |
| Sofia |
UEFA European Champions' Cup 1981/82, 1/16 finals |
| 30.09.1981 | | Glentoran | – | Progrès |  | 4:0 (1:0) |
| Belfast |
UEFA European Champions' Cup 1981/82, 1/16 finals |
| 16.09.1981 | | Progrès | – | Glentoran | | 1:1 (1:1) |
| Lëtzebuerg |
UEFA European Champions' Cup 1977/78, 1/8 finals |
| 02.11.1977 |  | Juventus | – | Glentoran | | 5:0 (2:0) |
| Torino |
UEFA European Champions' Cup 1977/78, 1/8 finals |
| 19.10.1977 | | Glentoran | – | Juventus | | 0:1 (0:1) |
| Belfast |
UEFA European Champions' Cup 1977/78, 1/16 finals |
| 29.09.1977 | | Glentoran | – | Valur |  | 2:0 (1:0) |
| Belfast |
UEFA European Champions' Cup 1977/78, 1/16 finals |
| 15.09.1977 | | Valur | – | Glentoran | | 1:0 (1:0) |
| Reykjavík |
UEFA European Champions' Cup 1970/71, 1/16 finals |
| 30.09.1970 | | Waterford | – | Glentoran | | 1:0 (0:0) |
| Port Láirge |
UEFA European Champions' Cup 1970/71, 1/16 finals |
| 16.09.1970 | | Glentoran | – | Waterford | | 1:3 (1:1) |
| Belfast |
UEFA European Champions' Cup 1968/69, 1/16 finals |
| 02.10.1968 | | Glentoran | – | Anderlecht |  | 2:2 (1:1) |
| Belfast |
UEFA European Champions' Cup 1968/69, 1/16 finals |
| 18.09.1968 | | Anderlecht | – | Glentoran | | 3:0 (2:0) |
| Bruxelles |
UEFA European Champions' Cup 1967/68, 1/16 finals |
| 04.10.1967 |  | Benfica | – | Glentoran | | 0:0 |
| Lisboa |
UEFA European Champions' Cup 1967/68, 1/16 finals |
| 13.09.1967 | | Glentoran | – | Benfica | | 1:1 (1:0) |
| Belfast |
UEFA European Champions' Cup 1964/65, 1/16 finals |
| 30.09.1964 |  | Panathīnaïkós | – | Glentoran | | 3:2 (1:1) |
| Athens |
UEFA European Champions' Cup 1964/65, 1/16 finals |
| 16.09.1964 | | Glentoran | – | Panathīnaïkós | | 2:2 (1:2) |
| Belfast |
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