1 Research Based on The Global Entrepreneurship Monitor Data: An Author Co-Citation Analysis Claudia Alvarez Autonomous University of Barcelona Business Economics Department, Spain and University of Medellin, School of Economics and Management, Colombia Building B 08193 Bellaterra (Cerdanyola del Vallés) - Barcelona Tel. 935811209 / Fax. 935812555 claudiapatricia.alvarez@uab.es David Urbano Autonomous University of Barcelona Business Economics Department, Spain José Ernesto Amorós Universidad del Desarrollo School Business and Economics, Chile Abstract Global Entrepreneurship Monitor (GEM) Project covers one of the most relevant gaps in the research on entrepreneurship, such as, the lack of international data on entrepreneurial activity and their analysis. Thus, the aim of this paper is to identify the intellectual structure of the research based on the GEM data through co-citation analysis. More specifically, this study delineates the subfields that constitute the research based on the GEM data, determine the relationship between the subfields and identify main authors in domains of research. Our analysis of GEM-based peer-reviewed works included on SSCI has revealed that GEM is increasingly being incorporated into high quality scholarship. If well there exists a type of “endogamy on the co-citations and journals (mainly Small Business Economics) more recent publication of GEM-based articles in different journals by scholars within and outside the GEM consortium are a good example of the evolution of GEM-based research. Keywords: Bibliometrics, co-citation, Global Entrepreneurship Monitor.