Southern, Eastern and Northern Buddhism
"Southern Buddhism", "Eastern Buddhism" and "Northern Buddhism" are geographical terms sometimes used to describe the styles of Buddhism practised outside of India.
Southern Buddhism
"Southern Buddhism" represents Buddhism as practiced in Sri Lanka and most of Southeast Asia. It is usually considered to be synonymous with the Theravada.
East Asian and Northern Buddhism
"Northern Buddhism" sometimes refers to Buddhism as practiced in East Asia and the Tibetan region- particularly China, Tibet, Korea, Mongolia, Japan, and Vietnam. It is often held to by synonymous with Mahayana. However, the term Northern Buddhism is also sometimes used to refer specifically to Tibetan (including Mongolian) Buddhism. In this terminology, the Buddhism of China, Japan etc. is called Eastern Buddhism. The Brill Dictionary of Religion uses the term Northern Buddhism in a sense exclusive of tantric Buddhism.
Mahayana and Theravada in Asia
The use and meaning of these terms reflects only the contemporary situation of the various schools of Buddhism in Asia, and even that only imperfectly. While the Theravada presently dominates in Southeast Asia, prior to the 13th Century the Mahayana was also well-established in that region. The survival of certain Mahayana notions in popular Southeast Asian Buddhism (such as the worship of Lokesvara- a form of Avalokitesvara- in Thailand) reflect the early presence of Mahayana ideology in the "Southern Buddhist" world. Ongoing contact between Southeast Asia and India brought a variety of doctrines, relics, and texts into Southeast Asia from both the Mahayana and Vajrayana traditions, as well as the Theravada and the other early Buddhist schools. Only after the decline of Buddhism in India did Theravada Buddhism begin to dominate in Southeast Asia, with Theravada-dominated Sri Lanka replacing India as the source of new texts and teachers.
In East Asia and Tibet, the lands traditionally described as "Northern Buddhist", non-Mahayana traditions have also exerted influence. Notably, the monastic codes (vinaya) followed by Mahayana monks from every tradition have their origin in the monastic codes followed by monks of the various Nikaya traditions. The historical evidence for the cohabitation of Mahayana and non-Mahayana monks in some South Asian monasteries during the spread of Buddhism from India to East Asia provides additional evidence that the form of Buddhism practiced in the "Northern" territories likely retains many non-Mahayana influences. Furthermore, in certain regions of China and East Asia (notably in Southern China), non-Mahayana forms were sometimes dominant.
Vietnam represents an interesting case of a country lying in the liminal region between the Northern and Southern Buddhist schools. As might be expected, Vietnamese Buddhism shows both a strong Mahayana and Theravada influence.
