Family name Muao (เมา 
, Muao 
) , in all the world, is a rare surname. The last name Muao is characteristic of Thailand, where it is a rare surname, New Zealand, and Malaysia, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Thailand, the United States, and Malaysia. Also, Muao is the forename as well as the last name.