Diversity, Equity, and Inclusion (DEI) initiatives have become essential for organizations seeking to build fair, respectful, and high-performing workplaces. This study examines the impact of DEI initiatives on organizational culture and organizational performance with particular attention to four dimensions: workforce diversity, inclusive leadership, equity in HR practices, and employee engagement in DEI programs. A descriptive research design was adopted, and primary data were collected from 110 employees using a structured questionnaire with simple random sampling. Secondary sources such as journals, books, research articles, websites, and organizational records were also reviewed to support the study. The responses were analyzed using descriptive statistics and multiple regression to identify the extent to which the selected DEI dimensions influence organizational performance. The findings indicate that DEI practices are generally perceived positively by employees and that workforce diversity, equitable HR practices, and participation in DEI programs contribute meaningfully to improved organizational outcomes. Among the examined variables, workforce diversity showed the strongest influence, suggesting that varied backgrounds and perspectives help strengthen creativity, collaboration, and decision-making. The study further highlights that organizations benefit when DEI is supported not only through policy but also through consistent leadership behavior, fair HR processes. Overall, the research concludes that effective DEI implementation can enhance organizational culture, employee engagement, productivity, and long- term sustainability. The study offers practical insights for managers who wish to strengthen inclusion and align workplace practices with organizational performance goals.