Geriatric rehabilitation is an interactive process between a patient and health professional aiming to maintain or restore the best possible function in various areas of life. The Internet of Things (IoT)-based systems offer new means to support geriatric rehabilitation. IoT-based systems consist of multiple technologies embedded with sensors and software to gather and exchange information with systems over the Internet. In addition to offering means for measuring and monitoring health conditions, these technologies may enable real-time and smooth data exchange between professionals to support care provision. IoT-based systems may have a major role in ensuring effective and equally accessible rehabilitation to the geriatric population. However, many issues warrant attention for the safe and efficient development and implementation of these IoT-based systems. This chapter explores contemporary IoT-based technologies available for geriatric rehabilitation, the geriatric rehabilitation service user as IoT user, and potential and challenges with the use of these technologies in geriatric rehabilitation.