This book provides the world’s first comprehensive account of responsible investment for fixed income investors. It enables readers to understand the key characteristics of fixed income investments and the relevance of sustainability-related issues to fixed income markets.The expert contributors to this volume explain how sustainability-related issues can be taken into account in fixed income research and decision-making, in portfolio construction, and in active ownership (engagement). They provide a series of detailed case-studies from different parts of the fixed income market (corporate investment grade and high yield, emerging markets, sovereign and municipal debt), from a range of organisations with a variety of investment approaches. The contributors also provide in-depth critical analysis of key issues such as the role and influence of credit rating agencies, green bonds, data and public policy in shaping investment practice.For investors, this book provides practical guidance on how to improve the financial and the sustainability performance of their fixed income investments. For stakeholders such as companies, civil society organisations, and governments it allows them to understand the role that fixed income might play in delivering the Sustainable Development Goals (SDGs), and to understand how they might encourage fixed income investors to pay greater attention to sustainability-related issues in their investment practices and processes.