This study aims to investigate the influence of behavioral biases on investors' investment decisions and explore the moderating role of financial literacy in this relationship. Research adopts quantitative approach, utilizing a survey questionnaire distributed among a sample of individual investors actively trading in Pakistan stock exchange. Survey assesses prominent behavioral biases like overconfidence, disposition effect, risk-aversion bias, and herding behavior, while measuring participants' level of financial literacy. Findings of study proves significant impact of behavioral biases on investors' decisions. Respondents validate prevalence of shared biases, including overconfidence, disposition effect, risk-aversion bias, and herding behavior. These biases tend to influence the decision-making process of investors, leading to suboptimal investment choices. Results suggest that financial literacy plays moderating role in linking behavioral biases and investment decisions. The implications of findings suggest importance of promoting financial literacy amid investors over guidance and support of financial professionals, ultimately improving quality of investment decision-making.