Most multinational enterprises face difficulties regarding what and how to best communicate activities related to corporate social responsibility. Therefore, this master thesis addresses the online communication of corporate social responsibility by Swedish multinational enterprises. The purpose is to contribute to the understanding of the way Swedish multinational enterprises reveal messages regarding corporate social responsibility to their international stakeholders while communicating with them online via their websites and social media. This research is of qualitative nature and follows a multiple case study design. The six Swedish MNEs the Volvo Group, H&M, Atlas Copco, Securitas AB, Svenska Kullagerfabriken, and Svenska Cellulosa AB are included in the sample. Two methods for data collection are combined: online observation of the communication regarding corporate social responsibility on the corporate websites including sustainability reports or alike and in social media as well as qualitative, semi-structured interviews with the employees in charge of corporate social responsibility. The results indicate that the examined multinational enterprises communicated corporate social responsibility in different ways depending on whether they communicate via their corporate websites, their reports or in social media. This master thesis concludes with practical recommendations for multinational enterprises involved in communication of corporate social responsibility.