This collection of authoritative papers presents a broad, state-of-the-art overview of new firm startups, drawing on the most recent research in economics, sociology and psychology. In addition to conceptual papers, it includes the qualitative and quantitative empirical research, which addresses both the antecedents and outcomes of new firm startups on different levels of analysis and provides insights into the process of new firm creation. This scholarly collection will be of interest to students and researchers, as well as policymakers, consultants and other practitioners in need of an in-depth understanding of new firm formation.