One of the most important instruments oftrade facilitation is the commodity nomenclature, whichprovides a definition of all goods subject to foreign trade.The correct classification of goods forms the basis fordetermining the appropriate value of a good and fordetermining the customs duties imposed on a good on importor export. Customs statistics on foreign trade are derivedfrom it, and those statistics in turn serve as a tool forthe determination and implementation of customs policy.Commodity nomenclature is used not only at the nationallevel, but also by the World Trade Organization, the WorldCustoms Organization, the United Nations, and otherinternational entities. Importers and exporters or investorsin other countries visit customs nomenclature websitesthousands of times a day to see the types and levels ofcustoms duties and other charges and trade policy measuresthat particular countries apply. Trade policy regulations,rules of origin, and trade statistics in almost all of thedeveloped and developing countries are designed and compiledon the basis of customs nomenclatures. This SmartLessondiscusses how the Central Asia Trade Logistics Projectworked with the Customs Administration of the Republic ofTajikistan on the development of its first nationalcommodity nomenclature.