Abstract: The general objective of this study is to investigate the influence of strategic management practices on the organizational performance of County Government of Mombasa. Specifically to examine the level of influences on the formulation of strategic management practices, to analyze the degree to which organizational environment affects the strategic management practices, to establish the extent to which strategic management plan implementation influences organizational performance and finally, to determine the effects of monitoring, evaluation, accounting and learning of the management plan practices have in the organizational performance in the County Government of Mombasa.