UEFA Cup Winners' Cup 1998/99, Preliminary Round |
 | 27.08.1998 |  | Maccabi Haifa | – | Glentoran |  | 2:1 (1:1) |
| Haifa |
UEFA Cup Winners' Cup 1998/99, Preliminary Round |
| 13.08.1998 | | Glentoran | – | Maccabi Haifa | | 0:1 (0:1) |
| Belfast |
UEFA Cup Winners' Cup 1996/97, Preliminary Round |
| 22.08.1996 |  | Sparta Praha | – | Glentoran | | 8:0 (4:0) |
| Praha |
UEFA Cup Winners' Cup 1996/97, Preliminary Round |
| 08.08.1996 | | Glentoran | – | Sparta Praha | | 1:2 (0:0) |
| Belfast |
UEFA Cup Winners' Cup 1990/91, 1/16 finals |
| 03.10.1990 |  | Steaua | – | Glentoran | | 5:0 (3:0) |
| Bucureşti |
UEFA Cup Winners' Cup 1990/91, 1/16 finals |
| 19.09.1990 | | Glentoran | – | Steaua | | 1:1 (0:0) |
| Belfast |
UEFA Cup Winners' Cup 1987/88, 1/16 finals |
| 29.09.1987 | | Glentoran | – | RoPS |  | 1:1 (0:0) |
| Belfast |
UEFA Cup Winners' Cup 1987/88, 1/16 finals |
| 16.09.1987 | | RoPS | – | Glentoran | | 0:0 |
| Rovaniemi |
UEFA Cup Winners' Cup 1986/87, 1/16 finals |
| 01.10.1986 |  | Lokomotive | – | Glentoran | | 2:0 (1:0) |
| Leipzig |
UEFA Cup Winners' Cup 1986/87, 1/16 finals |
| 17.09.1986 | | Glentoran | – | Lokomotive | | 1:1 (1:0) |
| Belfast |
UEFA Cup Winners' Cup 1985/86, 1/16 finals |
| 02.10.1985 | | Glentoran | – | Fram |  | 1:0 (0:0) |
| Belfast |
UEFA Cup Winners' Cup 1985/86, 1/16 finals |
| 01.09.1985 | | Fram | – | Glentoran | | 3:1 (0:1) |
| Reykjavík |
UEFA Cup Winners' Cup 1983/84, 1/16 finals |
| 28.09.1983 |  | Paris Saint-Germain | – | Glentoran | | 2:1 (0:1) |
| Paris |
UEFA Cup Winners' Cup 1983/84, 1/16 finals |
| 14.09.1983 | | Glentoran | – | Paris Saint-Germain | | 1:2 (0:0) |
| Belfast |
UEFA Cup Winners' Cup 1973/74, Quarterfinal |
| 20.03.1974 |  | Borussia | – | Glentoran | | 5:0 (2:0) |
| Mönchengladbach |
UEFA Cup Winners' Cup 1973/74, Quarterfinal |
| 05.03.1974 | | Glentoran | – | Borussia | | 0:2 (0:1) |
| Belfast |
UEFA Cup Winners' Cup 1973/74, 1/8 finals |
| 07.11.1973 | | Glentoran | – | Brann |  | 3:1 (2:0) |
| Belfast |
UEFA Cup Winners' Cup 1973/74, 1/8 finals |
| 24.10.1973 | | Brann | – | Glentoran | | 1:1 (1:0) |
| Bergen |
UEFA Cup Winners' Cup 1973/74, 1/16 finals |
| 03.10.1973 | | Glentoran | – | Chimia | | 2:0 (1:0) |
| Belfast |
UEFA Cup Winners' Cup 1973/74, 1/16 finals |
| 19.09.1973 | | Chimia | – | Glentoran | | 2:2 (2:1) |
| Râmnicu Vâlcea |
UEFA Cup Winners' Cup 1966/67, 1/16 finals |
| 05.10.1966 |  | Rangers | – | Glentoran | | 4:0 (2:0) |
| Glasgow |
UEFA Cup Winners' Cup 1966/67, 1/16 finals |
| 28.09.1966 | | Glentoran | – | Rangers | | 1:1 (0:1) |
| Belfast |
