This chapter is intended to introduce the reader to the UN Convention on the International Sale of Goods otherwise known as the ‘Vienna’ Convention or the ‘Convention of the International Sale of Goods (CISG). This chapter is intended to introduce the reader to the UN Convention on the International Sale of Goods otherwise known as the ‘Vienna’ Convention or the ‘Convention on the International Sale of Goods (CISG). The chapter begins with a discussion of the scope and application of the convention along with the difficulties with its interpretation and the problem of ensuring consistency across all jurisdictions. It then deals with the substantive provisions of the convention covering offer and acceptance, resolving the battle of the forms and variation of contract. It then details the rights, duties and remedies of the parties especially where these differ from English law, for example in relation to the seller’s right to cure, and the right to reduce the price in the event of breach and particularly the limitations on the right of either party to terminate the contract. It ends with a table comparing in summary form. the provisions of the CISG with the position in English law,