The present study tries to investigate the relationship between organizational intelligence and competitive strategies in headquarters of Iranian banks. To this end, 364 employees from public, private and specialized banks headquarters were chosen as sample. This study is an applied one and it is of survey and correlation type from data gathering perspective and data gathering tool was questionnaire. Findings of the present research show that organizational intelligence (OI) has positive significant relationship with competitive advantage (CS) and also a bank with higher OI has a higher CS. The results were obtained through SPSS and were analyzed using Pearson correlation test due to normal distribution of data. As results showed, both OI and CS dimensions were acceptable.