22 out of the 26 Chapters are available Open Access on Elgaronline under the terms of a CC BY-NC-ND 4.0 License. The complete Handbook containing all 26 chapters is available on Google Play (guide price GBP10) see link in 'More Information' below. The Handbook of Sociological Science offers a refreshing, integrated perspective on research programs and ongoing developments in sociological science. It highlights key shared theoretical and methodological features, thereby contributing to progress and cumulative growth of sociological knowledge. Reflecting 'unity in diversity', chapters explore a wide variety of research fields, ranging from cultural capital, migration, social networks, gender inequality, historical sociology and ethnography to the intersection of sociology and the life sciences. Examining basic methodological standards for theory construction and empirical research, the Handbook exemplifies commonalities between research programmes within these fields. The contributors also explore rigorous sociology related to theory construction, empirical research, and methods, including statistical modelling and the integration of theoretical and empirical research. Forward-thinking and original, the Handbook concludes by illustrating the common core of rigorous sociology, how it can contribute to understanding societal problems and to policy making, and how research into sociological science can continue to thrive in the future. Accessible and engaging, this Handbook will be invaluable for scholars and researchers of sociology and sociological theory, research methods in sociology and social policy, and comparative social policy. Exploring new developments and applications, it will also act as a useful reference guide for policy makers. The Handbook will likewise be an important resource for teaching advanced courses and training graduate students.