The paper examines the institutional channels through which Economic and Monetary Union (EMU) in the European Union (EU) can affect the transition countries of Central and Eastern Europe and three Mediterranean countries that aspire to join the EU.After describing the current institutional framework for relations between the EU and these countries, the paper considers two categories of institutional implications of EMU. The first stems from the need to satisfy the Maastricht convergence criteria before joining the euro area. Although the Maastricht criteria are not accession criteria, many of the countries reviewed are already formulating their macroeconomic policies in a way that will facilitate convergence toward the Maastricht targets. The second implication stems from the need to adopt the EU's institutional and legal provisions in the area of EMU, such as those referring to the establishment of independent central banks, the prohibition of central bank financing of the government and the liberalization of capital movements. Finally, 742 the paper discusses some of the key policy issues that EMU raises for the countries reviewed, in particular regarding exchange rate policy, capital account liberalization and the possible conflict between growth-enhancing measures and the Maastricht criteria.JEL classification: F15, F33.