| P | # | Player | Born | Height | Weight | Contract | |
|---|---|---|---|---|---|---|---|
| GK | Andreas Gianniotis | 1992-12-18 | 190 | 2016 Jun | |||
| GK | Balázs Megyeri | 1990-03-31 | 188 | 88 | 2018-06-30 | ||
| GK | Roy Carroll | 1977-09-30 | 187 | 74 | 2017-06-30 | ||
| D | Anastasios Papazoglou | 1988-09-24 | 182 | 76 | |||
| D | Avraam Papadopoulos | 1984-12-03 | 186 | 79 | 2015 jun | ||
| D | Charalampos Lykogiannis | 1993-10-22 | 186 | ||||
| D | Dimitrios Siovas | 1988-09-16 | 191 | 85 | 2021-06-30 | ||
| D | Drissa Diakité | 1985-02-18 | 175 | 69 | 2017-06-30 | ||
| D | Francois Modesto | 1978-08-19 | 184 | 77 | 2016-06-30 | ||
| D | Giannis Zaradoukas | 1985-12-12 | 171 | 66 | |||
| D | Giannis Maniatis | 1986-10-12 | 178 | 72 | 2017 jun | ||
| D | José Holebas | 1984-06-27 | 184 | 75 | 2018-06-30 | ||
| D | Kostas Manolas | 1991-06-14 | 186 | 79 | 2019-06-30 | ||
| D | Pablo Contreras | 1978-09-11 | 180 | 73 | 2014 Jun | ||
| D | Vasilios Karagounis | 1994-01-18 | 178 | 2015 Jun | |||
| D | Vassilios Torosidis | 1985-06-10 | 185 | 80 | 2018-06-30 | ||
| M | Andreas Tatos | 1989-05-11 | 175 | 68 | |||
| M | Ariel Ibagaza | 1976-10-27 | 164 | 65 | 2014 Jun | ||
| M | David Fuster | 1982-02-03 | 178 | 71 | 2017-06-30 | ||
| M | Djamel Abdoun | 1986-02-14 | 180 | 65 | 2016 jun | ||
| M | Ioannis Fetfatzidis | 1990-12-21 | 165 | 60 | Loan | ||
| M | Juan Pablo Pino | 1987-03-30 | 175 | ||||
| M | Leandro Greco | 1986-07-19 | 183 | 76 | |||
| M | Ljubomir Fejsa | 1988-08-14 | 185 | 80 | 2018 jun | ||
| M | Panagiotis Vlachodimos | 1991-10-12 | 184 | - | Loan | ||
| M | Paulo Machado | 1986-03-31 | 174 | 72 | 2015 Jun | ||
| M | Petar Grbic | 1988-08-07 | 188 | ||||
| F | Dimitrios Diamantakos | 1993-03-05 | 182 | 74 | 2019-06-30 | ||
| F | Diogo | 1987-05-26 | 176 | 71 | 2013 Jun | ||
| F | Konstantinos Mitroglou | 1988-03-12 | 188 | 78 | |||
| F | Marko Pantelic | 1978-09-15 | 183 | 80 | |||
| F | Rafik Zoheir Djebbour | 1984-03-08 | 185 | 77 |
| Date | Player | From | To | Status | Src |
|---|---|---|---|---|---|
| 28.Dec | Bobby Allain (GK) | Olympiakos SP Piraeus | Örebro SK | Confirmed | |
| 31.Jan | Tarik Elyounoussi (F) | Olympiakos SP Piraeus | AIK | Confirmed | |
| 30.Jun | Juan Carlos Paredes (D) | Olympiakos SP Piraeus | Watford FC | Confirmed | |
| 30.Jun | Omar Elabdellaoui (D) | Hull City AFC | Olympiakos SP Piraeus | Confirmed | |
| 30.Jun | Pajtim Kasami (M) | Nottingham Forest | Olympiakos SP Piraeus | Confirmed | |
| 30.Jun | Aly Cissokho (D) | Olympiakos SP Piraeus | Aston Villa FC | Confirmed | |
| 31.Jan | Luka Milivojevic (M) | Olympiakos SP Piraeus | Crystal Palace | Confirmed | |
| 31.Jan | Juan Carlos Paredes (D) | Watford FC | Olympiakos SP Piraeus | Confirmed | |
| 20.Jan | Omar Elabdellaoui (D) | Olympiakos SP Piraeus | Hull City AFC | Confirmed | |
| 16.Jan | Aly Cissokho (D) | Aston Villa FC | Olympiakos SP Piraeus | Confirmed |