This article aims at analyzing factors that influence on consumers’ behavioral intentions to reduce plastic waste. As an application of TPB, this research was conducted to find the relationship between environmental knowledge, attitude, subjective norms, perceived behavioral control with behavioral intentions. The authors used questionnaires from 726 consumers in Hanoi, Vietnam, the authors used SPSS version combined with data processing via Microsoft Excel 2013 to find the relationship between environmental knowledge, attitude, subjective norms, perceived behavioral control with behavioral intentions. | Factors influencing consumers’ behavioral intentions to reduce plastic waste: Empirical research with the case of Vietnam