The Confederation of Christian Trade Unions (Dutch: Algemeen Christelijk Vakverbond, or ACV; French: Confédération des syndicats chrétiens, CSC) is the largest of Belgium's three trade union federations.

Today the ACV/CSC has 22 regional federation and 16 sectoral unions, with a membership of 1.7 million (almost 16% of the total Belgian population).

The president is currently Ann Vermorgen [nl] and the secretary general is Marie-Hélène Ska.

The union's affiliates are: Media related to ACV-CSC at Wikimedia Commons

This article related to a European trade union is a stub.