With the digital age, notable transformations have been experienced in all areas of society. Innovations from technological developments have changed user requirements. Architecture aiming to respond to user needs has been one of the main areas where transformations are seen. Technological advancements starting with the Industrial Revolution have brought many problems such as environmental pollution, depletion of natural resources. They have also provided opportunities to users. Consequently, sustainability and green thinking in architecture have gained importance. Integrating technology into this understanding has become possible to design green and smart buildings. Green buildings are environmentally friendly structures that use natural resources efficiently and minimize waste while providing healthy environmental conditions to their users. On the other hand, smart buildings are structures designed with automation systems using technology, saving labour and resource consumption while providing user comfort. In this respect, smart buildings respond to green hospitals’ environmentally friendly and healthy design needs with their technological infrastructure. This study, which examines green and smart hospital buildings in the context of indoor air quality, aims to determine the role of smart building technologies in supporting and controlling healthy indoor air quality in green hospitals.