The General Labour Federation of Belgium (French: Fédération générale du travail de Belgique, pronounced [fedeʁɑsjɔ̃ ʒeneʁal dy tʁavaj də bɛlʒik], FGTB; Dutch: Algemeen Belgisch Vakverbond, pronounced [ˈɑlɣəmeːn ˈbɛlɣis ˈfɑkfərˌbɔnt], ABVV) is a socialist national trade union federation in Belgium.

It is affiliated with the International Trade Union Confederation and has a membership of 1.5 million.

[2] The first noteworthy historic date when talking about the history of the ABVV/FGTB is the founding of the Belgian Labour Party (BLP) in 1885.

Thus Belgium's second largest labour union noticed a modest decline in membership of 17,340 compared to 2016.

[4] Through the foundation of the Mouvement populaire wallon during the Great Strike that took place in the Winter 1960-1961, the Walloon working class now also demanded federalism as well as structural reforms.