Definitiv Professional
| Europa League | 16/09/2026 | Olympiakos | 20:00 | Jagiellonia Białystok | Georgios Kamaras Stadium | |||
| Europa League | 15/10/2026 | Marseille | 20:00 | Olympiakos | Orange Vélodrome | |||
| Europa League | 22/10/2026 | Olympiakos | 20:00 | Sparta Prague | Georgios Kamaras Stadium | |||
| Europa League | 05/11/2026 | Rennes | 17:45 | Olympiakos | Roazhon Park | |||
| Europa League | 26/11/2026 | Olympiakos | 17:45 | AC Milan | Georgios Kamaras Stadium | |||
| Europa League | 10/12/2026 | NK Celje | 20:00 | Olympiakos | Stadion Z'dežele | |||
| Europa League | 21/01/2027 | Olympiakos | 17:45 | Hoffenheim | Georgios Kamaras Stadium | |||
| Europa League | 28/01/2027 | Torreense | 20:00 | Olympiakos |
| UEFA Champions League Play-Offs | 24/02/2026 | B Leverkusen | 0 (2) (0) 0 | Olympiakos | |||
| B Leverkusen wins 2-0 on aggregate | |||||||
| UEFA Champions League Play-Offs | 18/02/2026 | Olympiakos | 0 2 | B Leverkusen | |||
| Champions League | 28/01/2026 | Ajax | 1 2 | Olympiakos | |||
| Champions League | 20/01/2026 | Olympiakos | 2 0 | B Leverkusen | |||
| Champions League | 09/12/2025 | Kairat Almaty | 0 1 | Olympiakos | |||
| Champions League | 26/11/2025 | Olympiakos | 3 4 | Real Madrid | |||
| Champions League | 04/11/2025 | Olympiakos | 1 1 | PSV Eindhoven | |||
| Champions League | 21/10/2025 | Barcelona | 6 1 | Olympiakos | |||
| Champions League | 01/10/2025 | Arsenal | 2 0 | Olympiakos | |||
| Champions League | 17/09/2025 | Olympiakos | 0 0 | Pafos | |||
| pos | club | w | d | l | gf | ga | gd | pts | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Atromitos | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 2 | Olympiakos | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 3 | Platanias | 0 | 0 | 0 | 0 | 0 | 0 | 0 |