This paper investigates how strategic entrepreneurship triggers and sustain market share with emphasis on strategic flexibility, adaptability, innovation, strategic leadership, risk taking and dynamic capabilities. The study utilized quantitative method through cross-sectional research design. Primary data were sourced through an adapted questionnaire. Internal consistency confirmed the reliability of the instrument while the content, construct, and criterion validity were acknowledged. Out of the fifteen textile firms in Lagos State, three textile manufacturing organizations were purposively selected with a population of 253 senior management employees. Total enumeration was applied and 237 copies of the questionnaire were retrieved. An econometric model was developed and multiple regression was applied as data analysis method. The findings indicated that strategic entrepreneurship has a significant effect on market share (adjusted R 2 =0.353 (F(6, 230) = 22.444, p=0.000). However, the individual coefficient results, identified dynamic capabilities, strategic flexibility and adaptability to have exhibited positive and significant effect on firm profitability. The study recommended institutionalization of adaptive inventiveness, litheness in the areas of adaptability, strategic flexibility, and dynamic capabilities to sustain market share.