The acronym ESG (for environment, social and governance) and sustainable finance are increasingly prevalent in the context of financial market law. In recent years, the concepts of ESG and sustainable finance have become of paramount importance for financial services providers and corporations alike. They have the potential to impact a broad range of strategic questions and decisions, business activities, services, products and operations. In particular, these topics have gained considerable momentum in the financial sector, requiring the adoption of new regulations and self-regulations in this innovative and ever-evolving field. This publication by Kellerhals Carrard explores the core principles of ESG and sustainable finance. It outlines pertinent laws and regulations from various perspectives and in a practical manner with a focus on finance and the financial services industry. The book highlights the profound impact of ESG criteria on Switzerland‘s regulations and financial services providers and other market participants, providing a comprehensive overview of the regulatory framework for sustainable finance. The objective of this book is to facilitate a deeper understanding of the evolution of ESG and sustainable financerelated regulatory requirements. It aims to equip professionals and other interested parties with the requisite knowledge to navigate Switzerland‘s fast evolving legal and self-regulatory landscape. Furthermore, it offers interdisciplinary legal perspectives on current and future developments.