In today's interconnected global world, luxury marketing is going through a significant change. It is now embracing sustainable practices while dealing with the complex differences between various cultures. This chapter examines the challenges of practicing sustainable luxury marketing across different cultures. It looks at the need for adapting to different cultures, how luxury is perceived, the role of immersive technologies, and how sustainability intersects with cultural values. The chapter also explores the ethical issues that arise from balancing exclusivity and inclusivity, as well as the risks of cultural appropriation. It also discusses strategies for measuring and communicating cross-cultural sustainable luxury marketing efforts, emphasizing the importance of collaborating on sustainability reporting and creating compelling stories.