Europa League 2023/24, Group A |
 | 14.12.2023 |  | Olympiakós | – | TSC |  | 5:2 (3:0) |
| Piraeus |
Europa League 2023/24, Group A |
| 26.10.2023 | | Olympiakós | – | West Ham United |  | 2:1 (2:0) |
| Piraeus |
Europa League 2023/24, Play-off Round |
| 31.08.2023 | | Čukarički | – | Olympiakós | | 0:3 (0:2) |
| Leskovac |
Europa League 2023/24, Play-off Round |
| 24.08.2023 | | Olympiakós | – | Čukarički | | 3:1 (3:0) |
| Piraeus |
Europa League 2023/24, Third qualifying round |
| 10.08.2023 | | Olympiakós | – | Genk |  | 1:0 (1:0) |
| Piraeus |
Europa League 2021/22, Group D |
| 25.11.2021 | | Olympiakós | – | Fenerbahçe |  | 1:0 (0:0) |
| Piraeus |
Europa League 2021/22, Group D |
| 30.09.2021 | | Fenerbahçe | – | Olympiakós | | 0:3 (0:1) |
| İstanbul |
Europa League 2021/22, Group D |
| 16.09.2021 | | Olympiakós | – | Antwerp | | 2:1 (0:0) |
| Piraeus |
Europa League 2021/22, Play-off Round |
| 19.08.2021 | | Olympiakós Pireus | – | Slovan Bratislava |  | 3:0 (1:0) |
| Piraeus |
Europa League 2020/21, Round of 16 |
| 18.03.2021 | | Arsenal | – | Olympiakós Pireus | | 0:1 (0:0) * |
| London |
Europa League 2020/21, Round of 32 |
| 18.02.2021 | | Olympiakós Pireus | – | PSV |  | 4:2 (3:2) * |
| Piraeus |
Europa League 2019/20, Round of 32 |
| 27.02.2020 | | Arsenal | – | Olympiakós | | 1:2 aet
(0:0, 0:1) |
| London |
Europa League 2018/19, Group F |
| 13.12.2018 | | Olympiakós | – | Milan |  | 3:1 (0:0) |
| Piraeus |
Europa League 2018/19, Group F |
| 08.11.2018 | | Olympiakós | – | F91 |  | 5:1 (4:0) |
| Piraeus |
Europa League 2018/19, Group F |
| 25.10.2018 | | F91 | – | Olympiakós | | 0:2 (0:0) |
| Lëtzebuerg |
Europa League 2018/19, Play-off Round |
| 23.08.2018 | | Olympiakós | – | Burnley | | 3:1 (1:1) |
| Piraeus |
Europa League 2018/19, Third qualifying round |
| 16.08.2018 |  | Luzern | – | Olympiakós | | 1:3 (0:1) |
| Luzern |
Europa League 2018/19, Third qualifying round |
| 09.08.2018 | | Olympiakós | – | Luzern | | 4:0 (3:0) |
| Piraeus |
Europa League 2016/17, Round of 32 |
| 23.02.2017 | | Osmanlıspor | – | Olympiakós Pireus | | 0:3 (0:0) |
| Ankara |
Europa League 2016/17, Group B |
| 20.10.2016 | | Olympiakós | – | Astana |  | 4:1 (3:0) |
| Piraeus |
Europa League 2016/17, Group B |
| 15.09.2016 | | Young Boys | – | Olympiakós | | 0:1 (0:1) |
| Bern |
Europa League 2016/17, Play-off Round |
| 25.08.2016 | | Olympiakós | – | Arouca |  | 2:1 aet
(0:0, 0:1) |
| Piraeus |
Europa League 2016/17, Play-off Round |
| 18.08.2016 | | Arouca | – | Olympiakós | | 0:1 (0:1) |
| Arouca |
Europa League 2011/12, Round of 16 |
| 08.03.2012 |  | Metalist Kharkiv | – | Olympiakós Pireus | | 0:1 (0:0) |
 | Kharkiv |
Europa League 2011/12, Round of 32 |
| 23.02.2012 | | Olympiakós Pireus | – | Rubin |  | 1:0 (1:0) |
| Piraeus |
Europa League 2011/12, Round of 32 |
| 14.02.2012 | | Rubin | – | Olympiakós Pireus | | 0:1 (0:0) |
| Moscow |
Europa League 2010/11, Third qualifying round |
| 29.07.2010 | | Olympiakós | – | Maccabi Tel Aviv |  | 2:1 (0:1) |
| Piraeus |
Europa League 2010/11, Second qualifying round |
| 22.07.2010 | | Olympiakós | – | Besa |  | 6:1 (0:0) |
| Piraeus |
Europa League 2010/11, Second qualifying round |
| 15.07.2010 | | Besa | – | Olympiakós | | 0:5 (0:2) |
| Tiranë |
UEFA Cup 2008/09, Group B |
| 18.12.2008 | | Olympiakós Pireus | – | Hertha |  | 4:0 (0:0) |
| Piraeus |
UEFA Cup 2008/09, Group B |
| 27.11.2008 | | Olympiakós Pireus | – | Benfica | | 5:1 (4:1) |
| Piraeus |
UEFA Cup 2008/09, First Round |
| 02.10.2008 | | Olympiakós Pireus | – | Nordsjælland |  | 5:0 (3:0) |
| Piraeus |
UEFA Cup 2008/09, First Round |
| 16.09.2008 | | Nordsjælland | – | Olympiakós Pireus | | 0:2 (0:0) |
| Farum |
UEFA Cup 2004/05, 1/16 finals |
| 24.02.2005 |  | Sochaux-Montbéliard | – | Olympiakós Pireus | | 0:1 (0:0) |
| Montbéliard |
UEFA Cup 2004/05, 1/16 finals |
| 17.02.2005 | | Olympiakós Pireus | – | Sochaux-Montbéliard | | 1:0 (1:0) |
| Piraeus |
UEFA Cup 1999/00, 1/16 finals |
| 07.12.1999 | | Juventus | – | Olympiakós Pireus | | 1:2 (1:1) |
| Palermo |
UEFA Cup 1995/96, 1/16 finals |
| 31.10.1995 | | Olympiakós Pireus | – | Sevilla |  | 2:1 aet
(0:0, 1:0) |
| Piraeus |
UEFA Cup 1995/96, 1/32 finals |
| 26.09.1995 |  | Maribor | – | Olympiakós Pireus | | 1:3 (0:1) |
| Maribor |
UEFA Cup 1995/96, 1/32 finals |
| 12.09.1995 | | Olympiakós Pireus | – | Maribor | | 2:0 (0:0) |
| Piraeus |
UEFA Cup 1995/96, Qualifying round |
| 22.08.1995 | | Olympiakós Pireus | – | Slavia Sofia |  | 1:0 (1:0) |
| Piraeus |
UEFA Cup 1995/96, Qualifying round |
| 08.08.1995 | | Slavia Sofia | – | Olympiakós Pireus | | 0:2 (0:0) |
| Sofia |
UEFA Cup 1993/94, 1/16 finals |
| 04.11.1993 | | Olympiakós Pireus | – | Tenerife | | 4:3 (2:1) |
| Piraeus |
UEFA Cup 1993/94, 1/32 finals |
| 29.09.1993 | | Olympiakós Pireus | – | Botev Plovdiv | | 5:1 (0:1) |
| Piraeus |
UEFA Cup 1993/94, 1/32 finals |
| 15.09.1993 | | Botev Plovdiv | – | Olympiakós Pireus | | 2:3 (1:1) |
| Plovdiv |
UEFA Cup 1989/90, 1/32 finals |
| 28.09.1989 | | Olympiakós Pireus | – | Rad |  | 2:0 (1:0) |
| Piraeus |
UEFA Cup 1984/85, 1/32 finals |
| 19.09.1984 | | Olympiakós Pireus | – | Xamax | | 1:0 (1:0) |
| Athens |
UEFA Cup 1979/80, 1/32 finals |
| 04.10.1979 | | Olympiakós Pireus | – | Napoli | | 1:0 (1:0) |
| Piraeus |
UEFA Cup 1978/79, 1/32 finals |
| 14.09.1978 | | Olympiakós Pireus | – | Levski | | 2:1 (0:1) |
| Piraeus |
UEFA Cup 1977/78, 1/32 finals |
| 14.09.1977 | | Olympiakós Pireus | – | Dinamo Zagreb | | 3:1 (1:1) |
| Piraeus |
UEFA Cup 1976/77, 1/32 finals |
| 29.09.1976 | | Olympiakós Pireus | – | Sportul |  | 2:1 (0:1) |
| Piraeus |
UEFA Cup 1972/73, 1/16 finals |
| 08.11.1972 | | Olympiakós Pireus | – | Tottenham Hotspur | | 1:0 (1:0) |
| Piraeus |
UEFA Cup 1972/73, 1/32 finals |
| 27.09.1972 | | Cagliari | – | Olympiakós Pireus | | 0:1 (0:1) |
| Cagliari |
UEFA Cup 1972/73, 1/32 finals |
| 14.09.1972 | | Olympiakós Pireus | – | Cagliari | | 2:1 (1:0) |
| Piraeus |
