This textbook offers an accessible overview of a century of planning theory, bringing a critical perspective rooted in contemporary research that will appeal to lecturers and to their students. Organised thematically, with a focus on institutional and justice issues, this book offers a well-grounded alternative to existing traditional overviews of planning theories by situating planning as a governance and regulatory practice. An essential text for researchers and students, it also offers an innovative framework for addressing current and future issues in urban and regional planning. Stefano Moroni is Professor of Planning at Milan Polytechnic University, Italy. He has extensive experience researching and teaching in the areas of planning theory, design and policy. He has been a member of the editorial board of the international scientific journal Planning Theory since the 1990s.