The Confederación Nacional del Trabajo (English: National Confederation of Labor; CNT) 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 (English: Iberian Anarchist Federation); 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.