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.
 "As of 10 February 2021"
 "As of 8 February 2021"
Transfers.
In.
 Total Spending: €10.40M
Out.
 Total Income: €21.95M
Net Income: €11.55M
Friendlies.
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Competitions.
Super League Greece.
Regular season matches.
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Play-off round matches.
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Greek Football Cup.
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Sixth round.
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Quarter-finals.
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Semi-finals.
The draw for the semi-finals was held on 16 March 2021.
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Final.
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UEFA Champions League.
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Play-off round.
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Group stage.
The group stage draw was held on 1 October 2020.
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UEFA Europa League.
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Knockout phase.
Round of 32.
The round of 32 draw was held on 14 December 2020.
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Round of 16.
The round of 16 draw was held on 26 February 2021.
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 "As of match played 22 May 2021"
 "As of match played 22 May 2021"
Squad statistics.
Goalscorers.
Own goals: 0
References.
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