The 1979–80 season of the Moroccan Throne Cup was the 24th edition of the competition.
Maghreb de Fès won the cup, beating Union de Sidi Kacem 1–0 in the final, played at the stade Roches Noires in Casablanca. Maghreb de Fès won the title for the first time in their history.
Tournament Last 16 Team 1 Team 2 Result Union de Touarga Difaâ Hassani El Jadidi 2–3 Ittihad Riadi Fkih Ben Salah Union Sportive Ksima Meskina Inezgane 1–0 Union de Mohammédia RAPC Casablanca 2–1 Mouloudia de Marrakech Mouloudia Club d'Oujda 1–0 Union de Sidi Kacem FAR de Rabat 1–2 Amal Belksiri Fath Union Sport 0–2 Raja Club Athletic AS Salé 3–0 Maghreb de Fès Wydad Athletic Club 1–0
Quarter-finals Team 1 Team 2 Result Fath Union Sport Raja Club Athletic 2–1match replayed after 1–1 draw Union de Sidi Kacem Union de Mohammédia 1–0 Maghreb de Fès Difaâ Hassani El Jadidi 3–1 Mouloudia de Marrakech Union Sportive Ksima Meskina Inezgane 3–1
Semi-finals Team 1 Team 2 Result Maghreb de Fès Fath Union Sport 1–0 Union de Sidi Kacem Mouloudia de Marrakech 2–1
Final The final took place between the two winning semi-finalists, Maghreb de Fès and Union de Sidi Kacem, on 18 July 1980 at the Stade Roches Noires in Casablanca.
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