Abstract: This study assessed the effect of board characteristics on profitability index of banks in Nigeria. Three banks which are considered as market leaders going by their market capitalization were used for the study. Ten years data starting from 2009 sourced from the annual reports and accounts of the banks were used for the study. Data analysis was done using the Ordinary Linear Regression (OLS) Technique. The results show that there is a significant effect between audit committee on bank performance being represented by ROA. Corporate governance indicators have a negative effect on the profitability measure. The study recommends that banks should operate with Small number of Board size as large board size may negatively affects performance. Audit Committee should not increase in their number to avoid reduction in the ROA of these banks.