An empirical analysis was made to estimate the determinants of entrepreneurial performance of coir yarn spinners operating in one of the Coir cluster regions promoted by the Government of Tamil Nadu. Demographic, social, economic, personality, work experience and competency on coir spinning profile of the coir yarn spinners and the enterprise profile such as size and geographical location of the spinning units were considered as predictor variables effecting for entrepreneurial managerial performance. The study found that there were differences and variations in the entrepreneurial managerial performance among coir yarn spinners. Such differences and variations in the performance are contributed by personal, personality, social, economic and competency variables of the coir yarn spinners and also by the size and geographical location of the enterprise. However, the study finds that the most important determinants of entrepreneurial performance are concerned with the competency level and the personality of the entrepreneur. High competency particularly on machine capacity utilization, management-oriented style coupled with high level of contact with change agents are the most important determinants of the entrepreneurial managerial high performance of the coir yarn spinners.