The 1985 Sudanese coup d'état was a military coup that occurred in Sudan on 6 April 1985. The coup was staged by a group of military officers and led by the Defense Minister and Armed Forces Commander-in-Chief, Field Marshal Abdel Rahman Swar al-Dahab, against the government of President Gaafar Nimeiry.

Since gaining independence in 1956, Sudan has witnessed a protracted series of coups d'état, totalling 19 coup attempts, of which 7 were successful, which places Sudan as the African nation with the most coup attempts and it ranks second globally, just behind Bolivia, which has recorded 23 coup attempts since 1950. This include the 1958 self coup, the 1985 and 2019 soft coups, and 1957 and 1959 Putsch.