Polygamy is legally permissible in Myanmar, also known as Burma, making it the only predominantly Buddhist nation in the world to allow for such unions. Despite such unions being legal under Customary Law, they are severely frowned upon by society. The law explicitly states that the husband must treat his second wife equal to his first. It is not clear whether there are limits to how many spouses a man can have.
References
Polygamy in Myanmar Wikipedia(Text) CC BY-SA