The purpose of this article was to analyse the concept of public diplomacy from the perspective of communication actors. Public diplomacy implies the communication between state and non-state actors and the foreign public, and the process of informing, influencing, establishing long-term relations and realizing foreign policy goals. While most studies to date view such communication activities as social interactions, some scholars consider them to be foreign policy activities, in which case the concept of public diplomacy is explained in terms of an interdisciplinary approach. Through the critical literature review, this article argues that public diplomacy shows the interaction between different communication stakeholders and the foreign public, where the former give direct messages and often achieve the desired effects through communication channels. By analysing public diplomacy activities carried out by communication actors, the article concludes that the concept of public diplomacy is clearly defined and more structured in communication sciences.