Cognomen Tharasak (Tharasak 
) , all around the world, is a very rare last name. The cognomen Tharasak is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Tharasak is the forename as well as the last name.
Aticha, Natcha, Nittaya, Sutthida, Sutthara, Kanokwan, Punnavit, Worrawit, Pornprapa, Sirikanlaya, Chanakamon, and Phra Sathien