ABSTRACT: India's economic liberalization reforms of 1991 were a defining moment in the nation's financial history, but their origins and effects span decades. This study explores the evolution of India's financial system, tracing its transformation from the 1980s pre-liberalization phase to 2020, with a focus on stock market development and macroeconomic indicators. This study employs a quantitative research approach, using time-series econometric analysis to evaluate stock market performance in relation to key macroeconomic variables such as GDP growth, inflation, and foreign exchange rates. The dataset spans 1980–2020 and includes data from the Reserve Bank of India (RBI), Bombay Stock Exchange (BSE), and World Bank. Regression models and correlation analysis are applied to assess the impact of policy changes on financial development. Additionally, event study methodology is used to examine market reactions to major economic policy shifts. This empirical investigation provides insights into how financial liberalization influenced stock market behavior and economic stability. The results indicate a strong correlation between financial liberalization and stock market performance. The post-liberalization period witnessed higher market capitalization, increased foreign portfolio investment (FPI), and enhanced financial integration. GDP growth and foreign exchange stability emerged as critical drivers of market expansion, reinforcing the positive impact of economic reforms. However, persistent market volatility, regional financial disparities, and limited financial inclusion remain challenges despite the overall growth trajectory. The findings reveal that while liberalization attracted significant foreign capital, external dependencies heightened market susceptibility to global financial crises. Additionally, stock market growth was uneven, benefiting metropolitan financial hubs more than rural and semi-urban regions. These insights underscore the dual nature of liberalization—promoting growth while exacerbating existing inequalities within India's financial ecosystem. For sustainable and inclusive financial growth, policymakers should implement targeted financial inclusion strategies to reduce regional disparities. Strengthening regulatory frameworks can mitigate excessive market volatility, while diversifying foreign investment policies can enhance economic resilience. Additionally, increasing retail investor participation through financial literacy programs can deepen market stability. By refining post-liberalization financial policies, India can balance economic openness with financial security, ensuring that stock market growth translates into broad-based economic development. These policy recommendations offer actionable strategies for fostering equitable financial modernization.