Kenyan banking sector has been riddled with many cases of loan defaults and collapse of some banks. As a result, Credit reference bureaus were established in 2010, to facilitate credit information sharing among commercial banks in Kenya. The purpose of this study was to assess the influence of credit information sharing on the performance of commercial banks. The research used the primary data collected using questionnaires and secondary data obtained from bank records and CBK reports. The findings revealed that the overall volume of lending in the banks has increased due to information sharing. The study also established that the influence of customer credit reports on performance measured by ROA and ROE is also statistically not significant meaning that the influence may be by chance or other factors and not customer credit reports only. The rate of defaulting by customers has been minimized with the use of credit reports and Customer Credit reports from CRBs help in pricing of loans in the institutions which has improved our overall profitability