Cognomen Thawisak (Thawisak 
) , around the world, is a very rare last name. The cognomen Thawisak is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Much more prevalently, Thawisak is the forename as well as the last name.
Euso, Kanchana, Khaokaeo, Phakamat, Rakonchan, Thinpakphanang, Thongsai, Hadpanas, Suphaphan, Songkhrao, Kamolsakkamchorn, Puangkaew, Tangngamrum, Thongluan, Nusomkaeo, Srikhamwang, Thongdontia, Wongkiratimethawi, Mongkonwisut, Chintakasikam, Thammasunthon, Wongwittayasak, Bunpheng, Chusuwan, Ainchaithong, Aranchot, Sango, Horim, Yadib, Saetan, Somnok, Sripet, Kawkai, Kolaka, Rakkha, Ritoakson, Charoenchaisunan, Trirat, Saksong, Suepsri, Chansra, Kanlaya, Pansila, Rakonnchan, Lunchak, Namphan, Wedbanpot, Saengnet, Eamdilokwong, and Rattananukunphong