Family name Kwanruen (Kwanruen 
) , in the world, is a very rare last name. The cognomen Kwanruen is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Predominantly, Kwanruen is the forename as well as the last name.
Sim, Yodkham, Srijumpa, Arunratn, Chanapai, Cantrell, Bandasak, Racharot, Lertlard, Sanphasiri, Saipradit, Silamutta, Chuayngan, Bangkadara, Boonpranee, Khanprakob, Khosakaree, Poommanee, Phabchaiyanan, Chaitasang, Kaewnoparut, Khongsompong, Yangrod, Oudomhack, Hanwisut, Jeanput, Wong, Maijai, Seubam, Bargin, Kawitu, Konkai, Poomee, Phispeng, Lakhom, Limlek, Sungthongngam, Jeumvijit, Meeprom, Silamut, Sripunvoraskul, Srichai, Kumkana, Kitiwat, Phukhaw, Putsiri, Liewtrakul, Jantree, Jiwwat, and Kaewboonrueang