The study sought to establish the influence of board functions on the performance of Kenyan county governments. A descriptive cross sectional survey design was adopted. The target population comprised of the 44 county governments in Kenya and the County Service Boards formed the unit of analysis. The study results established a positive relationship between the board function and the county government performance. The study recommended that there is need for the County governments in Kenya to have adequate oversight board of management to monitors the operations in the county and ensure performance is communicated to county members and stakeholders.