Across the world, จ (จ 
, Khrueain , Chuengkao ) is an extremely rare boy's first name. More prevalently, จ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Chuaprathum, Chuengkao, Khrueain, จ | Thailand |
Ch, Changjorhor, Chaorat, Chaorattana, Chaorattanakawee, Chartthakor, Charttongkham, Charttrapat, Charungsri, Chatchaphum, Chijit, Chiyakrabuut, Chrukham, Chuadkham, Chuaiboon, Chuaiintr, Chuaikham, Chuainakhet, Chuainakhon, Chuaket, Chuakhaeg, Chuakhum, Chuaklang, Chuakompeng, Chuakruit, Chuakrung, Chuaykleang, Chuaynaket, Chuaynakhet, Chuaynakon, Chuayprabat, Chuaysrang, Chueaket, Chueakhao, Chueaphrao, Chuensahwat, Chungkaow, Chungsamarn, Chunlaphet, E, Jankrabuanhat, Janpetburi, Janruphrn, Jaorasdr, Jaraphan, Jauransuk, Jongkran, Jorakrit, Jrasak, Jungsai,
มีเพียร, พรหมเกาะ, and สุวรรณเชิดชู