This study examines the Effectiveness of Corporate Social Responsibility (CSR) Reporting in Building Brand Reputation, with special reference to Lakshmi Machine Works Limited (LMW). In the modern business environment, organizations are increasingly evaluated not only on financial performance but also on their social, environmental, and ethical responsibilities. CSR reporting has become an important communication tool that helps companies disclose their sustainability initiatives and community contributions to stakeholders. The primary objective of this study is to analyze how CSR reporting influences brand reputation, customer perception, and purchase decisions. The research identifies CSR reporting as the independent variable and brand reputation as the dependent variable. Data were collected through a structured questionnaire and analyzed to understand stakeholder opinions regarding transparency, credibility, consistency, and impact of CSR disclosures. The findings indicate that effective and transparent CSR reporting positively influences public perception, enhances corporate image, and strengthens customer trust and loyalty. The study concludes that CSR reporting is not merely a compliance requirement but a strategic instrument for reputation management and sustainable growth. Organizations like LMW can strengthen their competitive position by maintaining consistent and credible CSR reporting practices.