Family name Khwanruthai (Khwanruthai 
) , around the world, is an extremely rare last name. The family name Khwanruthai is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, Khwanruthai is the forename as well as the last name.
Konod, Chatjainam, Chawmuangkhong, Bunruamkaew, Bunfueang, Kongchum, Konthong, Krainara, Rerngnirun, Yapalang, Kaewpilad, Khwantong, Phoonpanang, Taweephon, Thepsuwan, Ngoenchan, Yimcharoen, Detkhuntot, Wattanakul, Weerachannarong, Suwankeeree, Khunchamnan, Auksonwong, Soitakhu, Nakphum, Traiprom, Gonod, Hemgo, Saetan, Sombat, Aunksonwong, Pinjai, Ratana, Debpitak, Gohnod, Ladloy, Jirawuttiworawong, Loymai, Sareeamornphan, Saeueng, Soithaku, Chophuk, Bundach, Bunchoo, Khaisam, Kulrojjanasiri, Patkaew, Leklampoon, Tunpon, and Chaisongkram