Cognomen Chatchai (ฉัตรชัย 
, Chatchai 
, ชาติชาย , among others...) , throughout the world, is a rare family name. The cognomen Chatchai is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, Malaysia, and Cambodia, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Thailand, Malaysia, and China. Predominantly, Chatchai is the forename as well as the last name.
| mamá chao thiphayachat chatchai (b. 1935) |
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Luela, Labantao, Lohseethong, Wikaikul, Meteveravong, Sajjaanantakul, Suppakarn, Chansuwan, Kasemsrikeeree, Kitirianglap, Prukamnouy, Ratanophat, Tantranont, Nilkongsak, Sriuthaiwong, Teerasiripun, Wiboonsittichok, Siriraweekool, Charoenchai, Keawsongsee, Limtrakulthongchai, Tantivoravit, Pantrasoot, Bintohmad, Boonlert, Chookaew, Wanna, Uthum, Sakdee, Somsak, Phanda, Jomdech, Mamueng, Mukprom, Ampairat, Kanjuck, Tongsalabluan, Kotatha, Kluaymai, Preecha, Phanket, Rodboon, Tanorachorn, Thosinthiti, Temridtivong, Tienudomporn, Namsopa, Sanorkan, Kopaisan, and Wongcharoenrak