This thoroughly revised and updated second edition provides a comprehensive guide to Post Keynesian methodology, theory and policy prescriptions. The Companion reflects the challenges posed by the global financial crisis that began in 2008 and by the consolidation of the New Neoclassical Synthesis in macroeconomic theory. There are 43 entirely new entries, marking the emergence of a new generation of Post Keynesian scholars. The central issues that were dealt with in the first edition remain at the core of the book, but much more attention is paid in this second edition to financial markets, to Post Keynesian economics outside its traditional Anglo-American heartland and to gender issues and environmental policy. Including major theoretical, methodological and policy issues in Post Keynesian economics, this enriching Companion will strongly appeal to postgraduate and advanced undergraduate students in economics as well as related social science disciplines including international political economy, international relations, politics, public policy and sociology.