Family business groups (FBGs) are ubiquitous, influential, and play a major role in national economies. While much of the current research around this topic has so far focused on emerging economies, more knowledge is needed on family business groups in developed economies; specifically, how they innovate, strategize, govern, and grow. Offering a comprehensive and global perspective on family business groups, this Handbook comprises international contributions from leading experts. Split into five sections, it covers strategy and business transformation; innovation strategies; management and governance; and new avenues for research on FBGs including the issues of sustainability and cultural alignment. An important resource for students and researchers of family business, strategy and management, this Handbook signals the emergence of the family business group phenomenon and solidifies research in this evolving area of study.