In an era where environmental consciousness is paramount, building sustainable brands has become a critical goal for businesses worldwide. This study explores the synergistic effects of influencer marketing, brand evangelism, and data-driven strategies on sustainable brand development. By leveraging the authenticity of influencers and the passion of brand evangelists, companies can drive deeper consumer engagement and loyalty. Advanced data analytics provide actionable insights, optimizing marketing efforts to align with sustainability goals. This comprehensive approach uniquely examines the interconnectedness of these elements, offering new insights and practical guidance for businesses. The findings reveal significant practical implications, demonstrating how integrated strategies can enhance brand reputation and drive long-term success. Preliminary data suggests that genuine influencers and dedicated brand evangelists significantly boost consumer trust and engagement, while data analytics fine-tune sustainability messages.