'Mask') more commonly known as the Nojeh coup d'état (Persian: کودتای نوژه, romanized: Kūdetâ-ye Nowžeh), was a plan to overthrow the newly established Islamic Republic of Iran and its government of Abolhassan Banisadr and Ruhollah Khomeini.

The plan was organised by Colonel Muhammad Baqir Bani-Amiri, a retired Gendarmerie officer, with the Shah's last Prime Minister, Shapour Bakhtiar, contributing financial support and providing his contacts and authority.

[5] Bakhtiar's liaison with the conspirators in Iran was the businessman Manucher Ghorbanifar, who headed the logistics branch of the Niqab network which organised the civilian part of the plot.

[2][5] Bakhtiar told the plotters the United States "had given [the coup] its blessing," but "he was lying" as the U.S. "knew nothing about the Nojeh operation and would likely have opposed it on the grounds that it would endanger the lives of the [American] hostages" still held in Iran.

Their strategy was simple: internal disorders would first disperse Iranian military forces, so that on the very first day of the Iraqi attack Saddam could occupy the whole Western part of the country.