A new special issue of the ISJ series has been published focusing on smart cities. This issue was published in collaboration with the European Network of Living Labs to support cities and regions developing smart solutions for citizens, firms, and public organizations. It also provides reference material for an upcoming Smart City Guidebook. This unrefereed issue features a wide range of research articles and practical papers discussing the smart city phenomenon from different perspectives and contexts. The full issue can be read on the ISJ website.