The 1917 Spanish general strike, or revolutionary general strike of 1917, refers to the general strike that took place in Spain in August 1917. It was called by the General Union of Workers (UGT) and the Spanish Socialist Workers' Party (PSOE), and in some places it was supported by the National Confederation of Labor (CNT). The general strike took place in the historical context of the Crisis of 1917, during the reign of Alfonso XIII and the government of Eduardo Dato.

The Confederación Nacional del Trabajo is a Spanish confederation of anarcho-syndicalist labor unions, which was long affiliated with the International Workers' Association (AIT). When working with the latter group it was also known as CNT-AIT. Historically, the CNT has also been affiliated with the Federación Anarquista Ibérica ; thus, it has also been referred to as the CNT-FAI. Throughout its history, it has played a major role in the Spanish labor movement.