Environmental sustainability is a very crucial matter in today’s world. Universities across the globe made efforts to take part in this matter and it is scored based on the UI GreenMetric. There is a paradox of confusing environmental behaviour among the learners given that their universities exhibit good sustainability policies. This research aims to examine the effects of Green University Initiatives (GUI) on undergraduates’ reuse intention in Indonesian Universities while being moderated by environmental value. The population used in this research are undergraduate students from Universitas Indonesia, Universitas Diponegoro, and Universitas Gadjah Mada. The phenomena in this study were explored by using quantitative method. A purposive sampling method is applied to collect the data, with a total of 418 respondents. The data was collected through a survey that was spread amongst active undergraduates in the three universities. Previous studies are analysed to establish the relationship between the constructs, forming the basis for the research framework and hypotheses. To analyse the relationships between the variables, the research uses Structural Equation Modelling (SEM) to avoid common method variance and attain statistical credibility. A revised version of the Theory of Planned Behavior is recommended for studying sustainable actions in the academic environment and to achieve this, Attitude Towards Reuse, Moral Norm and Environmental Value should be endorsed more while removing the less influential predictors for a more accurate model. The outcome of this research will help policymakers and Indonesian universities to incorporate sustainability ethics across disciplines and prioritizing Green University Initiatives to facilitate sustainable decisions and encourage participation.