To deepen our understanding of how firms pursue different forms of legitimacy in communicating their corporate social responsibility (CSR), a specific framework has been developed. By employing a specific methodology for content analysis of online CSR communication, four different CSR legitimacy-seeking strategies are compared across European, North-American and Asian firms included in both Dow Jones Sustainability Index (DJSI) and Hang Seng (Mainland China and Hong Kong) Corporate Sustainability Index (HSMHSUS). The analysis reveals that Asian firms do not present significant differences in how they disclose on corporate websites their orientation to sustainability (i.e. institutional rhetoric) than European and North American counterparts...