United Nations Convention on Contracts for the International Sale of Goods

The United Nations Convention on Contracts for the International Sale of Goods (CISG), sometimes known as the Vienna Convention, is a multilateral treaty that establishes a uniform framework for international commerce. As of September 2023, it has been ratified or acceded to by 97 countries, representing two-thirds of world trade.

The CISG facilitates international trade by removing legal barriers among state parties (known as "Contracting States") and providing uniform rules that govern most aspects of a commercial transaction, such as contract formation, the means of delivery, parties' obligations, and remedies for breach of contract. Unless expressly excluded by the contract, the convention is automatically incorporated into the domestic laws of Contracting States and applies directly to a transaction of goods between their nationals.