The study focuses on the enhancing organizational performance through diversity management in deposit money bank in Delta State, Nigeria. The study focused on the Banks in Delta State, but specifically on First Bank of Nigeria Plc, branches in Asaba, Warri and Sapele, all in Delta State. In the study, a cross-sectional survey design was used. The complete populace is 390 which comprise of the clients and the workers of first bank Nigeria Plc. Using the Taro Yamane formula, a sample of 197 respondents from the first bank Nigeria Plc in Delta State was selected for this study. The stratified random technique was utilized with the probability sampling method. Gender diversity and age diversity were found to have a significant impact on organizational performance. The study concludes that Nigeria banks should maintain and improved upon their gender diversity management in order to continue in improving their performance. By implications, structuring bank policies in a manner that accommodates gender diversity will go a long way in boasting their performance. The study recommends that Nigeria should continue to maintain and makes new policies that favour age diversities, as this will go a long way in enhancing their organizational performance.
Keywords: Gender Diversity, Age Diversity, Organizational Diversity.