Last name Sithan (Sithan 
) , all around the world, is a rare cognomen. The cognomen Sithan is habitual in South-eastern Asia, particularly Singapore, where it is a rare surname, Malaysia, and Cambodia, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Malaysia, India, and Myanmar. Also, Sithan is the forename as well as the last name.