In theory, public relations belong to the profession of museums, however, the law which dictates this, hasn’t fully been implemented and therefore are still differences in approach and action in various museum institutions. By paper, it has been determined the implementation and significance of public relations on the example of two Zagreb museums. The first part of this paper provides a broad overview of literature linked with public relations, museums through several aspects, as well as public relations placed in the field of museums in a specific example. In the second part of the paper is processed data gathered by the interview methodology with persons responsible for public relations in the Ethnographic Museum and in the Museum of Contemporary Art. The gathered data is categorized in categories that include subjects such as descriptions of targeted groups, communication dynamics, types of media and evaluation of media publications. According to the data analysis, it was inferred that the Museum of Contemporary Art is implementing public relations better. Contrary to this, it is concluded that public relations in the Ethnographic museum have not been conducted entirely systematically, despite all efforts, therefore, several recommendations have been noted such as hiring an external expert for conducting a SWOT analysis or installing a human resources department.