Fernando, M. K. H.Dissanayake, D. M. R.2025-07-182025Fernando, M. K. H., & Dissanayake, D. M. R. (2025). The Impact of Online Communities and E-Word of Mouth on E- Purchase Intention of Gen Z: The Mediating Role of E-Brand Trust in Online Fashion Industry Sri Lanka. 9th Student Research Conference in Marketing. Department of Marketing Management, Faculty of Commerce and Management Studies, University of Kelaniya, Sri Lanka.http://repository.kln.ac.lk/handle/123456789/29754This study examines the impact of online communities and electronic word of mouth (E-WOM) on e-purchase intention (E-PI) of generation Z consumers in Sri Lankas online fashion industry with the mediating effect of e-brand trust (E-BT). The research aims to address the gap in understanding how gen Z consumers influenced by digital interactions in making e-purchase decisions in the context of Sri Lanka’s e-commerce and other online fashion sector, by analyzing the interactions of online community engagement and electronic word of mouth credibility and e-brand trust the study provides insights in to factors which drive online purchase behavior of gen z’s addressing the key problem of building e-brand trust and engagement in the competitive online fashion market. The study followed a quantitative research design, and survey data were collected through a self-administered questionnaire from selected sample of 305 individuals who represents the Gen Z consumers who shop for fashion items online and residing at all the provinces in Sri Lanka majoring the western province. The final dataset was analyzed by using SPSS-23 version. The statistical analysis found a significant positive impact of electronic word of mouth on e-purchase intention and the e-brand trust mediates the relationship between electronic word of mouth and e-purchase intention. Furthermore, it revealed that online communities also have a significant positive impact on e-purchase intention and e-brand trust mediates the relationship between online communities and e-purchase intention. The study highlights the pivotal role of electronic word of mouth as a digital tool for fostering digital trust and encouraging purchase intentions in digital platforms in the competitive online fashion industry, The sample is limited to gen Z consumers in Sri Lanka confining the generalizability of findings to the other demographics or regions and also the study focuses on the online fashion industry leaving the scope to explore the other ecommerce sectors. The study contributed to the theoretical knowledge by expanding the understanding of electronic word of mouth and online community dynamics in influencing gen Z's electronic purchase intentions in the relevant context. The findings paved the way for actionable insights for marketers emphasizing the need to build strong online communities and leveraging credible electronic word of mouth to enhance the e-brand trust and drive sales acquisitions to acquire a new consumers by highlighting gen Z as a main key area to consider, making digital presence more active than ever with significant impact to potential growth of business by leveraging digital assets effectively, Study could explore the comparative studies across different demographics or investigate other industries to validate and expand these findings. This research fills the gap in the existing literature and provides valuable insights to organizations that use digital platforms majoring in social media as communication tools.E-Word of MouthE-Purchase IntentionE-Brand TrustGen ZOnline CommunitiesSri Lankan Online Fashion IndustrySocial Media MarketingArticle