
The Nigerian banking sector has had a checkered transition and evolutionary trajectory. The sector has turned full cycle with several booms and bursts, distresses and regroupings experienced. Consequently, not a few studies have been undertaken to provide explanation to this phenomenon and to provide solutions. This study joins the plethora of other investigations seeking to explain factors that impact on the performance of Nigerian banks. Specifically, it investigated how organizational structure influenced the performance of Nigerian banks. The descriptive survey method of research was used for this study and responses were gathered from five hundred and forty-three respondents (543) comprising managerial and non-managerial staff of Commercial banks in South East Nigeria. Results revealed that structure has significant positive effect on the enhancement of performance of Commercial Banks in South East Nigeria. We thus recommend greater specialization among banks in Nigeria. This will further boost performance and subsequently enhances the growth of the Nigerian economy.