Whereas the knowledge spillover theory of entrepreneurship focuses on the diffusion of innovative output and knowledge filter among new firms and industries (Acts, et al., 2005; Audrescht, 2007), it has not been studied the phenomenon of entrepreneurship dissemination or entrepreneurship spillover among sectors. From an adaptation of the model of input-output matrix (Leontief, 1936; Dietzenbacher and Los, 2002) we develop a methodology that allows calculating the concept of entrepreneurship spillover. Besides, using intra-sectorial data from the 73 Spanish sectors, we empirically test the characteristics of the sectors with more entrepreneurship spillover. In short, the results clearly state that higher diversity and competition entails more entrepreneurship spillover. Moreover, the innovation only affects positively entrepreneurship spillover in restricted situations, briefly when the sectors have high competition and/or a high degree of technology.