This article delves into the intricate interplay of culture, soft power, and international relations, with a particular focus on the European Union's (EU) cultural diplomacy efforts within Eastern Partnership countries. It illuminates how culture serves as a potent force in shaping societal development and influencing international perceptions and relationships, drawing on Joseph Nye's conceptualization of soft power. Through a comprehensive historical analysis and examination of case studies, the research unveils the nuanced role of cultural diplomacy within the broader framework of soft power and public diplomacy. Specifically, it scrutinizes the EU's cultural diplomacy initiatives in Eastern Partnership countries: Armenia, Azerbaijan, Belarus, Georgia, Moldova, and Ukraine - highlighting their significance in diplomatic relations and regional cooperation, particularly within the European Neighbourhood Policy (ENP) and Eastern Partnership context. The study advocates for strategic enhancements in funding mechanisms, support for local institutions, and alignment with EU values to bolster the effectiveness of cultural diplomacy initiatives. Ultimately, it emphasizes the importance of an adaptive and inclusive approach to cultural policy, underscoring the need for continuous collaboration to foster resilient and mutually beneficial EU-Eastern Partnership relationships.