Buddhism in Vietnam, as practiced by the Vietnamese people, is a form of East Asian Mahayana Buddhism. It is the main religion in Vietnam. Vietnamese Buddhism is generally inclusive and syncretic, drawing on the main Chinese Buddhist traditions, such as Tiantai and Huayan, Zen (Thiền), and Pure Land.

East Asian Buddhism or East Asian Mahayana is a collective term for the schools of Mahāyāna Buddhism that developed across East Asia which follow the Chinese Buddhist canon. These include the various forms of Chinese, Japanese, Korean, and Vietnamese Buddhism in East Asia. East Asian Buddhists constitute the numerically largest body of Buddhist traditions in the world, numbering over half of the world's Buddhists.