This chapter examines how culture and religion have emerged as decisive yet often invisible tools of geopolitical power in the 21st century. Traditional forms of power—military, economic, and diplomatic are increasingly complemented by symbolic power, where influence is exercised through ideas, beliefs, and cultural appeal rather than coercion. Joseph Nye’s concept of soft power underlines this shift: seduction and attraction can shape global perceptions as effectively as force.States leverage cultural soft power to enhance their international standing. The U.S. projects influence through Hollywood, education, and technology, while South Korea exports K-pop, cinema, and cuisine. China promotes its values via Confucius Institutes and state media, and Gulf states like Qatar and the UAE showcase culture, sports, and education to assert prestige. Religion is similarly instrumentalized: Saudi Arabia, Iran, and Turkey extend influence via religious networks, while the Vatican emphasizes moral diplomacy. Extremist movements, such as ISIS, exploit religion for geopolitical and ideological objectives, destabilizing regions and influencing international security.At the same time, globalization and digital platforms have standardized culture, prompting resistance and the resurgence of local identities, languages, and traditions. Populism, nationalism, and cultural retrenchment weaponize identity, fuelling internal tensions and international disputes, as seen in Russia’s justification for the Ukraine invasion. The chapter concludes that culture and religion are ambivalent forces capable of building bridges or provoking conflict and essential lenses for understanding contemporary geopolitics.