The club was founded on 20 March 1949 in Derb Sultan by a group of Moroccan nationalists and trade unionists, including Mohamed Naoui [fr], the team's first coach, and Maati Bouabid, future Prime Minister and Minister of Justice, who regarded football as a way of resistance against the French colonizer, and wanted to join the sporting clubs of Casablanca.
[2] In 1950, composed of only Moroccan players, Raja began its journey from the lowest tier of the national football structure, and came at the top of the 4th division (Groupe Chaouia-Nord).
The following year, Raja will dominate the play-offs and established itself as one of the founding members of Botola under the newly created Royal Moroccan Football Federation, and played the first edition that debuted on 15 November 1956.
[3] The first two trophies were gained in 1974 and 1977 and the team reached Botola podium five consecutive times between 1972 and 1977, but failed to win the title.
The 2000s were marked by sporting instability mainly caused by the sale of key players to Europe or to The Gulf and the frequent manager changes.