Last name ธิราช (Dhiraj 
, Royal 
, Thirat 
) , all over the world, is a common cognomen. The surname ธิราช is characteristic of Kuwait, where it is quite a common surname, Jamaica, and Myanmar. Measured by absolute frequency, it is the most numerous in India, the United States, and Myanmar. More prevalently, ธิราช is the forename as well as the last name.