Last name Tasai (Tasai 
, ต๊ะใส) , all around the world, is a rare cognomen. The cognomen Tasai is characteristic of Thailand, where it is quite a rare surname, Malaysia, where it is a very rare surname, and Australia. Not in comparison with a country's population, the name is most common in Thailand, India, and Malaysia. Also, Tasai is the forename as well as the last name.