One of the significant factors in the responsible implementation of social entrepreneurship is the appropriate shape of the norms and values that determine it. With this in mind, this book draws on Catholic social teaching (CST) to make an original contribution to understanding and describing the axionormative determinants of social entrepreneurship. In the course of analysis and meta-scientific reflection, it was established that the axionormative determinants of social entrepreneurship revolve around three areas: (1) the axiology of (the idea of) social entrepreneurship; (2) the moral principles of social enterprise management; (3) the professional ethics of social entrepreneurs. This approach to research has allowed the original formulation of: (1) the constitutive values of the idea of social entrepreneurship; (2) the concept of the moral dimension of social enterprise management; (3) the concept of professional ethics of social entrepreneurs.