Timber has evolved from a traditional building material to ‘mass timber’, an engineered high-performance product from which complete construction systems and even high- rise buildings can be made. Mass timber has the potential to usher in a three-fold revolution in the way we build.• An ecological revolution because of the enormous sustainability bene ts of mass timber over its non renewable, fossil-based counterparts.• An economical, functional and technical revolution through the integration of ICT-based production technologies to support prefabrication of complete building systems in factories, increasing quality, safety and building speed.• An aesthetic and well-being revolution made possible by the spectacular possibilities of parametric design and the substantial psychological and health bene ts of mass timber.Abundantly illustrated, Tomorrow’s Timber covers all the above topics based on the latest scienti c insights and statistics and lessons learned from practice. Also included are inspiring case studies from all over the world, which show that the mass timber revolution has already begun.