The volume presents 20 classic contributions to Actor-Network Theory (ANT), which are published together for the first time in German. These texts by Bruno Latour, John Law, Michel Callon, and Madeleine Akrich have significantly influenced international science and technology studies over the past two decades. Complemented by an introductory overview article by the editors, the volume provides a comprehensive orientation and foundation for understanding one of the most significant new social theories. The book is aimed at anyone interested in the implications and consequences of science and technology for human society, particularly professionals and students in sociology, science and technology studies, and communication studies. It is also suitable as a foundational text in higher education institutions.