Scholars suggest that entrepreneurship research may be better adapted to reality and able to realize higher marginal returns by focusing on entrepreneurial action. There has been increasing empirical work in recent years on the relationships between affective, cognitive, and environmental antecedents and action as well as the organizational, societal, and institutional impacts of action. However, extant research operationalizes action mostly using single-item measures and summed binary (yes-no) indicators, although action has been conceptualized as multiphase process that includes abstract cogitations and observable behaviors. We thus conducted this study to develop and validate a measurement for entrepreneurial action to capture the process that includes both behavioral and cognitive activities.