Georg Lukacs was one of the most important intellectuals and philosophers of the 20th century. His last great work was an systematic social ontology that was an attempt to ground an ethical and critical form of Marxism. This work has only now begun to attract the interest of critical theorists and philosophers intent on reconstructing a critical theory of society as well as a more sophisticated framework for Marxian philosophy. This collection of essays explores the concept of critical social ontology as it was outlined by Georg Lukacs and the ways that his ideas can help us construct a more grounded and socially relevant form of social critique.