Technological developments, which have become widespread in recent years, have also changed the definition of cities, their management and the ways citizens participate. However, it has also brought up some issues regarding the fundamental rights and freedoms of city residents. Do smart city applications have the potential to improve fundamental rights? Although the smart city understanding and applications create some opportunities for the development and protection of fundamental rights and freedoms, it also has the potential to bring about some new problems in terms of fundamental rights and freedoms. The aim of this study is to reveal the possible negative effects of smart city initiatives on some basic human rights and freedoms. In this context, the study tried to reveal the connection between the two phenomena by using qualitative research methods and looking at academic literature studies that reveal the risks of smart city technologies to people's fundamental rights and freedoms. In this study, smart cities are examined mainly from a critical perspective. Based on the research conducted in this field, in terms of which rights and freedoms and what kind of a threat do smart cities pose? Answers to these questions were sought. Although smart city technologies have many effects that make life easier for city residents, they directly or indirectly cause significant negative effects on the fundamental rights and freedoms of individuals in many respects, such as privacy and confidentiality violations, predictive profiling, encouraging digital division, and freedom of expression and thought. Violation of these rights may provide grounds for violations of other types of rights and freedoms of individuals. In short, although smart city initiatives provide the opportunity to realize and develop people's rights and freedoms, they can also be used to violate and limit rights and freedoms.