Family name Chadchai (ชัดชัย 
, Chadchai 
) , around the globe, is an extremely rare last name. The cognomen Chadchai is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, Chadchai is the forename as well as the last name.
Man, Parareak, Pinsinchai, Phuntaeo, Phuntaeu, Jinawang, Tiansivakul, Markjarone, Khampheera, Tangtorkit, Narkchareon, Musikachai, Sanguannam, Boonyanuwat, Pakdeebutr, Pisitsupamitr, Rattanarin, Wichitchanya, Sawaengphokhai, Chaicharoen, Ampornpisutleat, Jaruwattananunt, Kongmaklum, Bootchot, Cimarosa, Suksanti, Tang, Kosup, Buasri, Hordon, Vutiwut, Yodudom, Yeamma, Subanan, Sorarutayangkoor, Aintasa, Rattanachomphoo, Ausrisa, Dangsen, Tumtong, Nudtako, Oansamer, Yoodsaranee, Uapathayakorn, Mangklawong, Maneewan, Maneewun, Sakunwetsa, Khogkhao, and Thanakornphiphatthanakul