Top 10 Countries with the Highest Proportion of Buddhists: To make an estimate relating to the total number of Buddhists is very difficult due to the several factors. It is a widen religion throughout the world. There is a list of top ten countries having a large amount of Buddhism. Top 10 Countries with the Highest Proportion of Buddhists RankCountryPercentage of Buddhists 1.Thailand95.00 2.Cambodia90 3.Myanmar88 4.Bhutan75 5.Sri Lanka70 6.Tibet65 7.Laos60 8.Vietnam55 9.Japan5010.Macau 45 Thailand is the leading nation having the biggest ratio of Buddhists in all over the nations almost 95% of its population believes in Buddhism. But if we analyze the number of Buddhists by population thenChina has the largest number almost10,20,00,000members belonged to Buddhism.