Surname Niwet (นิเวศน์ 
, นิเวศ , Niwet 
) , across the world, is a rare cognomen. The last name Niwet is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much more frequently, Niwet is the forename as well as the last name.
Aotbang, Chanchli, Khawnoul, Klumchang, Tasawang, Ngaecharoenkul, Homkhamma, Inthasuea, Sawatnopharat, Srichaiwong, Chumphusri, Boonyuang, Kaeothawi, Kongwanna, Roungsaengsri, Deepradit, Luangsutip, Khamparsee, Jeenaboonrueang, Manirattanauaong, Kanjanawisut, Petcharanan, Siriwong, Saoridet, Saraphot, Saraduan, Intam, Usaha, Sriyom, Anukun, Paotajai, Phosri, Ditsuk, Inmueon, Wongsa, Malasin, Rojanasarampakij, Mahsaah, Suaisawat, Somgate, Sriyome, Arunberkfa, Phakaew, Phosing, Ongwutithum, Maneerat, Matsapan, Matchaset, Saetang, and Wangkietkajon