Theravāda in the context of "Buddhism in Southeast Asia"

Mahayana is the largest branch of Buddhism, followed by Theravada. It is a broad group of Buddhist traditions, texts, philosophies, and practices developed in ancient India (c. 1st century BCE onwards). Mahāyāna accepts the main scriptures and teachings of early Buddhism but also recognizes various doctrines and texts that are not accepted by Theravada Buddhism as original. These include the Mahāyāna sūtras and their emphasis on the bodhisattva path and Prajñāpāramitā. Vajrayana or Mantra traditions are a subset of Mahāyāna which makes use of numerous Tantric methods Vajrayānists consider to help achieve Buddhahood.

Mahāyāna also refers to the path of the bodhisattva striving to become a fully awakened Buddha for the benefit of all sentient beings, and is thus also called the "Bodhisattva Vehicle" (Bodhisattvayāna). Mahāyāna Buddhism generally sees the goal of becoming a Buddha through the bodhisattva path as being available to all and sees the state of the arhat as incomplete. Mahāyāna also includes numerous Buddhas and bodhisattvas that are not found in Theravada (such as Amitābha and Vairocana). Mahāyāna Buddhist philosophy also promotes unique theories, such as the Madhyamaka theory of emptiness (śūnyatā), the Vijñānavāda ("the doctrine of consciousness" also called "mind-only"), and the Buddha-nature teaching.

The Milindapañha (lit. 'Questions of Milinda') is a Buddhist text which dates from sometime between 100 BC and 200 AD. It purports to record a dialogue between the Indian Buddhist sage Nāgasena, and the 2nd century BC Indo-Greek king Menander I (Pali: Milinda).

The Milindapañhā is regarded as canonical in Burmese Buddhism, included as part of the book of Khuddaka Nikāya. An abridged version is included as part of Chinese Mahāyāna translations of the canon. The Milindapañha is not regarded as canonical by Thai or Sri Lankan Buddhism, however, despite the surviving Theravāda text being in Sinhalese script.

Buddhism (Burmese: ဗုဒ္ဓဘာသာ), specifically Theravada branch (Burmese: ထေရဝါဒဗုဒ္ဓဘာသာ), is the official and state religion of Myanmar since 1961, and practiced by nearly 87% of the population. It is the most religious Buddhist country in terms of the proportion of monks in the population and proportion of income spent on religion. With approximately 48 million Buddhists, Myanmar has the third largest Buddhist population in the world, after Thailand and China. Adherents are most likely found among the Bamar, Shan, Rakhine, Mon, Karen, and Chinese who are well integrated into Burmese society. Monks, collectively known as the sangha (community), are venerated members of Burmese society. Among many ethnic groups in Myanmar, including the Bamar and Shan, Theravada Buddhism is practiced in conjunction with the worship of nats, which are spirits who can intercede in worldly affairs. Buddhists in Myanmar are governed by Burmese customary law.

Regarding the practice of Buddhism, two popular practices stand out: merit-making and vipassanā meditation. There is also the less popular weizza path. Merit-making is the most common path undertaken by Burmese Buddhists. This path involves the observance of the Five precepts and accumulation of good merit through charity (dana, often to monks) and good deeds to obtain a favorable rebirth. The meditation path, which has gained ground since the early 20th century, is a form of Buddhist meditation which is seen as leading to awakening and can involve intense meditation retreats. The weizza path is an esoteric system of occult practices (such as recitation of spells, samatha and alchemy) believed to lead to life as a weizza (Burmese: ဝိဇ္ဇာ Pali: vijjā), a semi-immortal and supernatural being who awaits the appearance of the future Buddha, Maitreya (Burmese: အရိမေ‌တ္တေယျ Pali: Arimetteyya).

The Vessantara Jātaka is one of the most popular jātakas of Theravada Buddhism. The Vessantara Jātaka tells the story of one of Gautama Buddha's past lives, about a very compassionate and generous prince, Vessantara, who gives away everything he owns, including his children, thereby displaying the virtue of perfect generosity. It is also known as the Great Birth Sermon.

The tale of Prince Vessantara is celebrated as an annual festival in Thailand, Laos, Myanmar, Sri Lanka and Cambodia.