The study investigated the effect of entrepreneur attributes on the financial performance of private security firms Kenya. Further, the research employed a descriptive survey research design with a census of 75 private security firms. Both primary and secondary data was used in this study. Primary data was collected using questionnaires as the main tool for data collection. The instrument was pretested to ensure validity and reliability of each construct measurements before actual study. Descriptive statistics such as frequency distribution, mean, standard deviation and coefficient of variation were used to describe the basic features of the data. Simple univariate regression was applied to examine the effect of entrepreneur attributes on financial performance of private security firms in Kenya. The study established that entrepreneur attributes had a significant direct effect on private security firms’ financial performance. The study recommended that the owners/mangers of private security firms should have the required professional attributes that can enable their businesses thrive. They should employee managers with the required academic qualifications.