The subject of research of this paper will be the research and study of communication in non-profit foundations. He will emphasize that he will remain in the communication of the National Foundation for Civil Society Development as the leading public institution for cooperation, networking and financing of civil society organizations in the Republic of Croatia. The intent is proven by the way the Foundation communicated with its public in achieving its core objectives: providing professional and financial support to programs that foster the sustainability of the nonprofit sector, cross-sectoral cooperation, civic initiatives, philanthropy, volunteering and the undeclared democratic ministry. The final paper will use standard research methods, methods of analysis based on available Croatian and international professional literature, scientific papers, publications, published articles, regulations and codes. Descriptive methods of analysis of primary and secondary sources of publicly available data and other sources will also be used. Using the case study method, they will analyze the communication of the National Foundation for Civil Society Development. The non-professional sector, the civil sector or the third sector, are terms that refer to individuals and organizations that improve society and act as a community of responsible citizens oriented towards the progress of the authorities, but also the progress of the community to which they belong. Unlike the private and public sectors, the non-profit sector is related to the concept of social authorities, the brigade for the functioning and prosperity of society. Non-profit organizations have played an important role in the development of their environment, listening to the achievement of a certain public interest, but the basic and self-denying purpose of existence has not made a profit. Like the for-profit sector, the non-profit sector necessarily serves activities within the field of public relations in order to successfully achieve its goals. Public relations in a nonprofit environment establishes and maintains the relationships they need to ensure the organization’s own autonomy and the resources needed to achieve its missions. The public relations of each sector have in common the necessity of a strategic approach and well-planned communication strategies. In this paper, you can present a moody public relations strategy that a nonprofit organization uses to achieve success in its work, as well as quality planning in the communication campaign itself. Through the study cases of the Foundation, they try to point out the role and significant quality of planned public relations in civil society organizations, as well as the presentation of a modern approach to communication strategies.