Problems such as global warming, epidemics, social inequalities, poverty, drought, forest fires and food inadequacy in the world today have led to an increase in people's concerns about the future. The way to eliminate the worries of human beings about the future is through a sustainable living. The aim of this study is to improve the awareness of gifted students about sustainable living through environmental education carried out in out-of-school learning environments. Mixed method was used in the research. The participants of the research are 25 gifted students selected by criterion sampling method. The " Sustainable Living Awareness Scale" developed by Akgül & Aydoğdu (2020) and the questionnaire developed by the researchers were used as data collection tools. Wilcoxon Signed Rank Test was used in the analysis of quantitative data and content analysis method was used in the analysis of qualitative data. The research findings indicate that, it was determined that environmental education positively improved students' awareness of sustainable living. It is thought that environmental education will contribute to the development of various behaviors in order to support sustainable living.