Greater India

Greater India was the historical extent of the culture of India beyond the Indian subcontinent. This particularly concerns the spread of Hinduism in Southeast Asia, introduced by the Indianized kingdoms of the 5th to 15th centuries, but may also refer to the spread of Buddhism from India to Central Asia and China by the Silk Road during the early centuries of the Common Era. To the west, Greater India overlaps with Greater Persia in the Hindu Kush and Pamir mountains. The term is tied to the geographic uncertainties surrounding the "Indies" during the Age of Exploration.

Although most cultures in Southeast Asia were primarily influenced by India, this is different for Vietnam. Vietnamese culture was primarily influenced by the culture of China.