The mineriads were a series of protests and often violent altercations by Jiu Valley miners in Bucharest during the 1990s, particularly 1990–91. The term "mineriad" is also used to refer to the most significant and violent of these encounters, which occurred June 13–15, 1990. During the 1990s, the Jiu Valley miners played a visible role in Romanian politics, and their protests reflected inter-political and societal struggles after the Romanian Revolution.

The Jiu Valley is a region in southwestern Transylvania, Romania, in Hunedoara county, situated in a valley of the Jiu River between the Retezat Mountains and the Parâng Mountains. The region was heavily industrialised and the main activity was coal mining, but due to low efficiency, most of the mines were closed down in the years following the collapse of Communism in Romania. For a long time the place was called Romania's biggest coalfield.