Abstract: Currently, business intelligence is regarded as a competitive advantage and a vital factor in the organization’s success. Business intelligence integrates the data and information of the organizations and provides the opportunity of controlling and navigating the key processes of organizations for the managers and it is also regarded as a foundation for making effectual decisions. Establishing business intelligence requires providing some prerequisites as shown by investigations. One of the most conspicuous and significant elements for establishing business intelligence is management of organizational knowledge. In the same vein, the current study has been carried out in order to investigate and present a model for enhancing business intelligence of companies with knowledge management approach in the knowledge-based companies of East Azarbaijan Science and Technology Park. The population of the study are managers and experts of knowledge-based companies of East Azarbaijan Science and Technology park during the year 2010-11. In order to collect the required data, the researchers employed two questionnaires on business intelligence and knowledge management which are designed according to the elements of each of the variables of the investigation. In order to test the research hypotheses, the statistical tests of t-student, ANOVA, Pearson correlation coefficient are utilized. The results of the study indicated that knowledge management and business intelligence were favorable in the investigated criteria. Further, there is a positive significant relationship between business intelligence and knowledge management. Besides, no significant relationship was witnessed between knowledge and companie’s experience neither between business intelligence and company’s intelligence.