2020–21 Olympiacos F.C. season

The 2020–21 season was the 96th season in existence of Olympiacos and the club's 62nd consecutive season in the top flight of Greek football. The season was affected by the COVID-19 pandemic and all Olympiacos' games were played behind closed doors. Olympiacos participated in the Greek Super League winning their 46th title, finishing 26 points ahead of PAOK who came second. Domestically the team participated in the Greek Football Cup as well. They reached the final where they lost to PAOK. Olympiacos qualified also for the UEFA Champions League group stage for a second consecutive season but failed to qualify to the knock-out phase. Having finished third in their group, they were then transferred to UEFA Europa League knockout phase. The season covers the period from 20 August 2020 to 22 May 2021.

In
Total Spending: €10.40M

Out
Total Income: €21.95M

Net Income: €11.55M

Semi-finals
The draw for the semi-finals was held on 16 March 2021.

Group stage
The group stage draw was held on 1 October 2020.

Round of 32
The round of 32 draw was held on 14 December 2020.

Round of 16
The round of 16 draw was held on 26 February 2021.

Goalscorers
Own goals: 0