Much research has tried to explain why some people, but not others, choose to become entrepreneurs. The cognitive approach provides a useful insight to explore the entrepreneur-related phenomena through perceptions and intentions. Cross-national studies of this kind are rare, since large international surveys are needed. In this sense, the GEM-project questionnaire includes some questions about entrepreneurial perceptions of the adult population. Thus, the main objective of this paper is building a theoretical framework of entrepreneurial perceptions and testing their influence on entrepreneurial intentions with GEM data. This may allow overcoming some of the weaknesses of previous studies in entrepreneurial intentions. Three kinds of perceptions are identified: individual perceptions, perceptions about entrepreneurial opportunities, and socio-cultural perceptions. Their effect on intentions is tested along with some control variables. Results confirm that these perceptions are relevant variables in explaining the entrepreneurial intention of individuals across nations. At the same time, results from this paper would contribute to the opening up of a new line of analysis using GEM-project data: the conception stage of the new venture process; that is, the study of potential entrepreneurs.