Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 05.09.2018 | P. Tachtsidis | Olympiakos Piraeus | Nottingham Forest | Free |
| 05.09.2018 | I. Angelopoulos | Olympiakos Piraeus | Pafos | Free |
| 02.09.2018 | E. Hajisafi | Olympiakos Piraeus | — | Free |
| 31.08.2018 | Marko Marin | Olympiakos Piraeus | FK Crvena Zvezda | € 500K |
| 31.08.2018 | S. Evangelou | Olympiakos Piraeus | — | Loan |
| 29.08.2018 | M. Siopis | Olympiakos Piraeus | Aris Thessalonikis | Free |
| 29.08.2018 | G. Gianniotas | Olympiakos Piraeus | AEK Athens FC | Free |
| 22.08.2018 | N. Vergos | Olympiakos Piraeus | Panathinaikos | Free |
| 21.08.2018 | U. Đurđević | Olympiakos Piraeus | — | N/A |
| 19.08.2018 | B. Engels | Olympiakos Piraeus | Reims | Loan |
| 07.08.2018 | Antonios Fouasis | Olympiakos Piraeus | — | Free |
| 02.08.2018 | Guillaume Olivier Gillet | Olympiakos Piraeus | Lens | Free |
| 24.07.2018 | A. Romao | Olympiakos Piraeus | Reims | Free |
| 21.07.2018 | V. Odjidja-Ofoe | Olympiakos Piraeus | Gent | € 3M |
| 06.07.2018 | S. Risvanis | Olympiakos Piraeus | Atromitos | Free |
| 04.07.2018 | S. Proto | Olympiakos Piraeus | Lazio | Free |
| 03.07.2018 | I. Gavalas | Olympiakos Piraeus | — | Free |
| 03.07.2018 | Sebá | Olympiakos Piraeus | — | € 3M |
| 03.07.2018 | S. Zdjelar | Olympiakos Piraeus | FK Partizan | € 500K |
| 01.07.2018 | Bruno Viana | Olympiakos Piraeus | SC Braga | € 3M |
| 01.07.2018 | E. Lamprou | Olympiakos Piraeus | — | Free |
| 01.07.2018 | K. Laifis | Olympiakos Piraeus | Standard Liege | € 1.5M |
| 01.07.2018 | Botía | Olympiakos Piraeus | — | Free |
| 01.07.2018 | Igor Silva | Olympiakos Piraeus | AEK Larnaca | Loan |
| 01.07.2018 | M. Saliakas | Olympiakos Piraeus | — | Loan |
| 13.06.2018 | I. Ivušić | Olympiakos Piraeus | — | Free |
| 23.02.2018 | Hrvoje Milić | Olympiakos Piraeus | Napoli | Free |
| 09.02.2018 | S. Kapino | Olympiakos Piraeus | Nottingham Forest | Free |
| 31.01.2018 | Diogo Figueiras | Olympiakos Piraeus | SC Braga | € 1.2M |
| 31.01.2018 | Emmanuel Emenike | Olympiakos Piraeus | Las Palmas | Loan |
| 31.01.2018 | M. Carcela-González | Olympiakos Piraeus | Granada CF | N/A |
| 30.01.2018 | T. Elyounoussi | Olympiakos Piraeus | — | N/A |
| 30.01.2018 | S. Zdjelar | Olympiakos Piraeus | FK Partizan | Loan |
| 23.01.2018 | J. Vuković | Olympiakos Piraeus | Hellas Verona | Loan |
| 19.01.2018 | A. Karamanos | Olympiakos Piraeus | — | Loan |
| 16.01.2018 | E. Fardou Ben Mohamed | Olympiakos Piraeus | FK Crvena Zvezda | N/A |
| 04.09.2017 | A. Gianniotis | Olympiakos Piraeus | Atromitos | Loan |
| 02.09.2017 | T. Elyounoussi | Olympiakos Piraeus | Qarabag | Loan |
| 31.08.2017 | P. Retsos | Olympiakos Piraeus | Bayer Leverkusen | € 22M |
| 31.08.2017 | Nicolás Martínez | Olympiakos Piraeus | — | Loan |
| 31.08.2017 | G. Manthatis | Olympiakos Piraeus | — | Loan |
| 31.08.2017 | P. Kasami | Olympiakos Piraeus | FC Sion | N/A |
| 30.08.2017 | M. Siopis | Olympiakos Piraeus | — | Loan |
| 29.08.2017 | P. Vouros | Olympiakos Piraeus | — | N/A |
| 27.08.2017 | G. Gianniotas | Olympiakos Piraeus | Valladolid | Loan |
| 27.08.2017 | M. Saliakas | Olympiakos Piraeus | — | Loan |
| 25.08.2017 | S. Risvanis | Olympiakos Piraeus | Atromitos | Loan |
| 25.08.2017 | K. Plegas | Olympiakos Piraeus | — | Free |
| 21.08.2017 | T. Tzandaris | Olympiakos Piraeus | Panathinaikos | Free |
| 08.08.2017 | D. Goutas | Olympiakos Piraeus | St. Truiden | Loan |