IoT is a network that includes sensors, software, physical devices, sharing storage (Cloud) and Internet connectivity that empower these things to collect, record, manage and exchange data. IoT is promising technology that offers intelligent solutions for real life challenges. A wide variety of applications and services is covered by IoT infrastructures, from Smart City, Smart transportation and Industrial Automation. This page mostly focuses on Location-based services in IoT. Localization is an important part of IoT where the Location of Everything plays an important role to improve most services in IoT applications. Indeed, the collected data should be tagged with the information of where the data is coming from. For example, in most IoT applications we need to know the location of sensors, places, users or reach a specific spot inside a big hospital, retail malls, and huge industrial complex.