In this paper, we argue that national culture is important in interpreting the differences of entrepreneurial activities between countries. Furthermore, national wealth plays a moderating role between national culture and entrepreneurial activities. Datasets from the Global Leadership and Organizational Behavior Effectiveness (GLOBE) project and Global Entrepreneurship Monitor (GEM) study were analyzed. We find that there are interaction effects between GDP, a proxy for national wealth, and several cultural dimensions on entrepreneurial activities. More traditional cultural variables (in-group collectivism, humane orientation, and power distance) enhance early-stage and established entrepreneurship in low-and medium-GDP countries, but hinder early-stage and established entrepreneurship in high-GDP countries. More modernistic cultural variables (performance orientation, future orientation, and uncertainty avoidance) promote high-growth and high-innovation entrepreneurship in some situations, especially in high-GDP countries. Implications and limitations are discussed. © 2012 by Koninklijke Brill NV, Leiden, The Netherlands.