Surname Theeradej (ธีรเดช 
, Theeradej 
) , in all the world, is a very rare cognomen. The cognomen Theeradej is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more prevalently, Theeradej is the forename as well as the last name.
Saebuai, Sombuntham, Klongbanchee, Thepthong, Honghiran, Sahawattanapong, Theerasabkul, Suntinark, Wongpoonsap, Suwannarong, Charoenvuttitham, Wattanapong, Siribunyaratanatdej, Siribunyarattanatdej, Rungruangkiat, Suntanaphanich, Theerapitayathorn, Raktaprachit, Chaiyurat, Sae Buai, Sappan, Saetung, Sae-Buai, Suabtrirat, Sompuit, Khamkaen, Rakthai, Jingjit, Tepkasetkul, Hongpisuttikul, Vongraj, Suksawas, Sutthana, Leoungvilai, and Thaweerattanasinp