Surname Sitthirak (Sitthirak 
) , around the world, is a rare last name. The surname Sitthirak is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, Sitthirak is the forename as well as the last name.
Ura, Kingkan, Kittaya, Natvipha, Eknarin, Sarayuth, Siriphon, Sivakorn, Songklod, Pornthip, Phonthip, Natnicha, Vipawadee, Wajeenun, Kittichai, Narinnarat, Aonalin, Subanthita, Songhpa, Suwanee, Saree, Kitti, Narit, Onnut, Wanna, Warat, Apitak, Panorn, Prasit, Natcha, Waeota, Sirinya, Supanut, Supatra, Suathorn, Songpha, and Patcharamon