This note provides an overview of the main issues for Australian lawyers to consider when advising on international sale of goods contracts and the United Nations Convention on Contracts for the International Sale of Goods (CISG) (Vienna, 1980) (known as the Vienna Sales Convention (Convention)), involving an Australian contracting party. This note outlines the key concepts and provisions of the Convention, how it applies, how to opt out and how the Convention is domestically enacted in Australia.