Contemporary society encounters profound economical, socio-ecological and political crises challenging the democratic foundation of our societies. This book addresses the potentials and challenges for Action Research supporting democratic alternatives. It offers a broad spectrum of examples from Scandinavian Action Research showing different openings towards democratic development. The book's first part contributes with a wide range of examples such as Action Research in relation to the Triple Helix/Mode II contexts, to design as a democratic process, to renewal of welfare work and public institutions, to innovation policies combining Action Research with gender science. In the second part of the book epistemological and ontological dimensions of Action Research are discussed addressing questions of validity criteria related to Action Research, the transformation of knowledge institutions and the specific character of creativity in Action Research. The book offers a basis for theoretical as well as practical oriented discussions and critical reflections within the field of Action Research and related research orientations, involving a wide range of actors.