The Confederacion Nacional del Trabajo (CNT; 'National Confederation of Labour') is a Spanish confederation of anarcho-syndicalist labor unions affiliated with the International Workers Association (IWA; Spanish: AIT Asociacion Internacional de los Trabajadores). When working with the latter group it is also known as CNT-AIT. Historically, the CNT has also been affiliated with the Federacion Anarquista Iberica (Iberian Anarchist Federation FAI). In this capacity it was referred to as the CNT-FAI. Throughout its history, it has played a major role in the Spanish labor movement.