AbstractTourism shows a significant transformation. Therefore, knowing the perception of residents regarding its impacts can conduce to more adequate public policies, strategies, decisions and actions, more adapted to residents’ expectations, involving these stakeholders and deepening their engagement in tourism development. This study is a work in progress¹. Its main objective is to identify the perceptions of residents of the Lisbon region regarding the impacts of tourism. A quantitative methodology was used to analyse respondents’ perceptions based on descriptive statistical techniques and non-parametric tests. The results of this research indicate that residents have a positive attitude concerning economic, as well as cultural, social and environmental impacts. The study also reveals differences in attitude depending on age, gender and professional activity.