The 2020–21 season is Raja CA's 72nd season in existence and the club's 64th consecutive season in the top flight of Moroccan football. They are competing in Botola, the Throne Cup, CAF Champions League, CAF Confederation Cup and Arab Club Champions Cup. The season covered the period from December 2020 to 21 August 2021. It was the first season since 2012–13 without club captain Badr Benoun, who joined Al Ahly. 
Raja CA kicked off the season with a 3–3 draw against Fath Union Sport in the first match of the league.
Competitions.
Champions League.
First round.
In the qualifying rounds, each tie will be played on a home-and-away two-legged basis. If the aggregate score will be tied after the second leg, the away goals rule was applied, and if still tied, extra time will not be played, and the penalty shoot-out will be used to determine the winner (Regulations III. 13 & 14).
Confederation Cup.
Knockout phase.
Final.
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Arab Club Champions Cup.
Semi-final.
The tournament was postponed in 2020 due to COVID-19 pandemic, thus Raja CA played the semi-final's second leg against Ismaily on January 2021 in Marrakesh, eleven months after the first leg in Egypt.
Final.
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Club awards.
Eagle of the Month award.
"Awarded monthly to the player that was chosen by fans."