The articles in this special section focus on the Internet of things (IoT) as it relates to people. The focus is on state-of-the-art research and development activities contributing to all aspects of people-centric IoT, which include, but are not limited to, people-IoT interactions, social network applications to mobile computing, context-aware applications and services, human in the loop, big data analysis in people-centric IoT, cloud-based people-centric IoT applications and environments, security and privacy, and prototypes, field experiments, and testbeds.