The volume collects papers on central aspects of Alexius Meinong's Gegenstandstheorie (Theory of Objects) and its transformation in contemporary logic, semantics and ontology covering the impact of his views on grasping and representation, the status of nonexistent or inconsistent objects and their incorporation in theories like Noneism and Possible-World-Semantics. In addition it presents studies on Meinong's notion of probability and on Auguste Fischer, a student and collaborator of Meinong.