Entrepreneurship: Concept and Measurement * June, 2009 AUTHORS FERNANDA LLUSSÁ Universidade Nova de Lisboa (fui aluna da USP) fajl@fct.unl.pt JOSÉ MANUEL ALBUQUERQUE TAVARES Universidade Nova de Lisboa jtavares@fe.unl.pt RÚBEN BRANCO Universidade Nova de Lisboa - Faculdade de Economia rubentmb@gmail.com Abstract: We survey the concept of entrepreneurship and the different ways in which entrepreneurial activity might be measured and assessed. In the process we present the very diverse views of who the entrepreneur is, discuss how economic science has neglected the issue and explore different approaches to the measurement of entrepreneurial activity. Keywords: entrepreneurship concept, measurement, entrepreneur. Subject area: Entrepreneurship and Innovation