The World Customs Organization (WCO) is the only intergovernmental organization exclusively focused on Customs matters.

With its worldwide membership, the WCO is now recognized as the voice of the global Customs community. It is particularly noted for its work in areas covering the development of global standards, the simplification and harmonization of Customs procedures, trade supply chain security, the facilitation of international trade, the enhancement of Customs enforcement and compliance activities, anti-counterfeiting and piracy initiatives, public-private partnerships, integrity promotion, and sustainable global Customs capacity building programs. The WCO also maintains the international Harmonized System goods nomenclature, and administers the technical aspects of the WTO Agreements on Customs Valuation and Rules of Origin.