The Cairo fire, also known as Black Saturday, was a series of riots that took place on 26 January 1952, marked by the burning and looting of some 750 buildings—retail shops, cafes, cinemas, hotels, restaurants, theatres, nightclubs, and the city's Casino Opera —in downtown Cairo. The direct trigger of the riots was the Battle of Ismailia, an attack on an Egyptian police installation in Ismaïlia by British forces on 25 January, in which roughly 50 auxiliary policemen were killed.

Mostafa el-Nahas Pasha or Mostafa Nahas was an Egyptian politician who served as the Prime Minister for five terms.