Single–use plastic waste, when not properly managed and discarded, threatens both the environment and human health. Over the next 30 years, the global plastics waste crisis will worsen if current consumption and production patterns continue. The plastics crisis is seen as an anthropocentric problem that requires an understanding of consumer consumption patterns in order to encourage its alleviation. Thus, this paper proposes a conceptual framework to examine the predictors for adopting single–use plastics reduction activities among young urban consumers in Malaysia. Rather than assuming the homogeneity of consumers’ single-use plastics reduction patterns, the current framework posits that different consumers are at different stages of behavioral readiness and adoption. It also explores the underlying factors and specific social referent groups at each stage using the integration of the Transtheoretical Model and Theory of Planned Behavior. Consumer segmentation based on the theoretical integration could be used to create more targeted behavioral change efforts that align with the characteristics and drivers of each stage. It is hoped that the present research can help to support efforts in reducing single-use plastics