This article presents a systematic conceptual model to elucidate the role of cultural diplomacy and news media in the development and branding of cultural tourism destinations. The proposed model is built on four key components: cultural diplomacy as a strategic foundation, news media as an interactive medium, message framing, and cultural tourism destination branding. Using a documentary research method, the article extracts and explains the model’s key components and relationships, emphasizing its unique contribution by treating news media as an independent and equal partner to cultural diplomacy. This approach highlights the active role of media and the critical importance of message framing as a connecting mechanism between cultural policy and brand image. Ultimately, the process leads to the creation and reinforcement of a cultural tourism destination brand, which can enhance a destination’s international standing and foster sustainable cultural tourism development. The model provides a scientific and practical framework for policymakers and tourism stakeholders, addressing the existing gap in presenting integrated conceptual models that systematically incorporate the role of news media in this context.