Family name Niyomwong (Niyomwong 
) , worldwide, is a rare last name. The family name Niyomwong is characteristic of Thailand, where it is a rare surname, Sweden, and Denmark, where it is a very rare surname.
Saman, Natchanon, Nattarika, Thitiporn, Chutathon, Yupaporn, Thongsuk, Lamphoel, Rossarin, Pharinya, Pimonwan, Pornwipa, Parichat, Chuthirun, Chanitta, Watanyu, Wannisa, Navaporn, Vilai, Wilai, Dokson, Tewika, Sarinya, Sirijit, Suthasinee, Supanit, Pattama, Jutarat, Jintana, Thahwin, Natagon, Nattaya, Kanjana, and Weerapanya Samantha