The participation of women in financial markets, particularly in the Indian stock market, has witnessed a gradual increase in recent years. However, the behaviour and investment patterns of working women remain an underexplored area, especially within specific regional contexts such as Tamil Nadu. This empirical study aims to analyse the investment behaviour, preferences, risk tolerance, awareness, and influencing factors that shape the stock market participation of working women in Tamil Nadu. The research is based on primary data collected through structured questionnaires distributed among working women across diverse sectors such as education, healthcare, IT, banking, and public services.