The excessive use of natural resources and irresponsible behavior of tourists have posed severe threats to sustainable destination environment. In response, destination managers have been paying more attention to environmental protection and focusing on strategic ways to achieve a sustainable destination environment. Objective of the study is to analyze the influence of destination brand equity (DBE) on tourists’ environmentally responsible behavior (ERB). The study considered four dimensions of DBE, including perceived destination awareness, quality, image, and loyalty. Further, the study explored the interrelationship among the dimensions of DBE and considered perceived destination loyalty (PDL) as a mediator. Further the study explained tourists’ ERB with the serial mediation of perceived destination trust (PDT) and moderation of destination green equity (DGE). The study employed a self-administrative survey method, and data were gathered from 911 respondents who attended selected nature parks. Results for DBE indicated insignificant effect of perceived destination awareness (PDA) on tourists’ ERB, while perceived destination quality (PDQ) and perceived destination image (PDI) have a significant impact on tourists’ ERB. Further results indicated that PDL has significantly mediated all three dimensions of DBE. The results also revealed that PDT and PDL serially mediated the effect of PDA, PAQ, and PDI on tourists’ ERB. Finally, moderation results indicated that DGE significantly moderated the effect of PDQ, PDI, and PDL on tourists’ ERB. The study has enhanced the existing literature on destination branding and tourists’ ERB through Stimuli‐Organism‐Response (S‐O‐R) model. The study has proposed significant branding strategies for destination management to influence tourists’ ERB. The study has also suggested strategies for policymakers and tourism departments.