This study identifies the determinants of Internet entrepreneurial commitment by integrating the theory of planned behavior (TPB) and diffusion of innovation theory (DOI). It hypothesizes six determinants—relative advantage/perceived desirability, complexity, compatibility, attitude, subjective norm, and perceived behavioral control/perceived feasibility—alongside two moderators: job type and personal innovativeness. The research model was empirically tested with data collected from 220 respondents using multiple regression analysis. The findings endorse the integration of TPB and DOI in analyzing Internet entrepreneurial commitment determinants. However, the significance of these six determinants varies according to job type and personal innovativeness. Educators, policy makers, and venture investors can use the findings to design fostering programs and curriculums that are customized to individuals according to their different personal characteristics to enhance Internet entrepreneurial commitment.