Buddist countries in the world

Cambodia

The aravada Buddhism is the official religion in Cambodia which is practiced by 95 percent of the population-- just like that of Thailand, Burma, Sri Lanka.Buddhism has existed in Cambodia since at least the 5th century, and in its earlier form was a type of Mahāyāna Buddhism.

Thailand

Thailand is the world's most heavily Buddhist country. About 93.6 percent of all the people in Thailand are Buddhists. Thailand, one of the popular Buddhist countries and around 90% of total population are Buddhist. Most of Buddhist devout in Thailand follows Theravada.

Myanmar

Buddhism in Myanmar is practiced by 89% of the country's population, and is predominantly of the Theravada tradition. It is the most religious Buddhist country in terms of the proportion of monks in the population and proportion of income spent on religion.

Sources : Wikipedia & Google Images