Last name Тхя (Thia 
, Thâ , Тхя 
) , in all the world, is quite a rare cognomen. The surname Тхя is characteristic of Singapore, where it is quite a common surname, Mauritius, where it is quite a rare surname, and Myanmar. Not in comparison with a country's population, it is the most numerous in South-eastern Asia, particularly Indonesia, Singapore, and Myanmar. Also, Тхя is the forename as well as the last name.