The Wood and Plastic Union (, GHK) was a West German trade union representing workers in wood and plastic manufacturing.

The union was founded in 1949 and affiliated to the German Trade Union Confederation. While it represented plastic workers from the start, 90% of its membership was in wood manufacturing. By 1998, it had a membership of 145,128. In 2000, it merged into IG Metall.

Presidents 1949: Markus Schleicher 1951: Franz Valentiner 1953: Heinz Seeger 1958: Gerhard Vater 1977: Kurt Georgi 1981: Horst Morich 1993: Gisbert Schlemmer

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