This article explores the role of inflation expectations in the conduct of monetary policy. It reviews the various measures of inflation expectations used by central banks, including surveys and market-based indicators, and considers their advantages and disadvantages. It examines the critical role of inflation expectations in the framework that central banks use to understand, forecast, and control inflation. It also looks at their role as an indicator of central bank credibility. The behaviour of inflation expectations over the past two years is analyzed and policy conclusions are offered.