Extant business ethics literature available for application to international business demonstrates some variety but no comprehensive principles. While the domains of both international business and business ethics are expanding, they are also becoming increasingly divergent. At the same time, the primacy accorded to the multinational enterprise in both fields ignores the socio-cultural and political embeddedness of economic activities, and multiple agencies in international business (individuals, firms, nations, etc.). Some international business theorists have offered the view that international exchange should be the central building block for theories on international business. In this paper, it is argued that international exchange could be the fundamental unit of analysis for international business ethics as well. The potentially unifying features of exchange norms and ethical principles leads the author to develop some core exchange ethics principles that are tested on three recent international business practices.