Surname Kritsanat (Kritsanat 
, กฤศณัฏฐ์ , กฤษณัฏฐ์ ) , across the world, is an extremely rare cognomen. The surname Kritsanat is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, Kritsanat is the forename as well as the last name.
Chen, Panpitakkul, Prohsunthon, Phetkarnchanawat, Raungtanu, Nitikunrungsin, Hiranrojchanapong, Udombhakphiphat, Muenkaewthamrong, Suriyaphan, Peungprasert, Pramuansin, Jantaratsopin, Tantiprasert, Nonthakaeo, Wongpaisal, Leerapongnan, Thongtanworaphat, Watanaprasit, Siangchokyoo, Chueasirithawon, Likitcharoensakul, Khongkaew, Kaiyaphan, Chananuwat, Suriyapan, Panja, Surkit, Bubpha, Praenoon, Rookong, Thinan, Nopnob, Inkeaw, Maliwan, Surakit, Thanawanicholan, Srisang, Rotwimonkarn, Vilaijit, Watborisut, Khamchean, Khamwong, Kittipan, Nakthong, Na Nakorn, Nitidetphutthiphong, Yongmanvong, Chumsri, and Sriwattanangkoon