Cognomen Karnjana (Karnjana 
) , throughout the world, is a rare family name. The family name Karnjana is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. More prevalently, Karnjana is the forename as well as the last name.
Sena, Narkparn, Engkayutwittaya, Yaemnuam, Sanpechudayarn, Anurakkamolkul, Chayapiwat, Petchkornjak, Pellegrin, Jantakarn, Jandragoliga, Jongwilaiwan, Tangjarujuree, Thongkhaw, Sukkhammas, Sripattara, Khwannimit, Raksanawes, Jantarapaha, Worawichaiyan, Wutthiphap, Chaisirikul, Panaboot, Koonlertkit, Ayuwatanachai, Sadakorn, Agus, Oiywan, Satorn, Saelim, Chamoi, Keonoy, Janson, Jeerat, Noorod, Somkaew, Thongseekham, Aulpatch, Buaniam, Buachoo, Panwong, Poyairos, Pitpong, Lokkumlue, Lokkunlue, Yashueb, Mayusiri, Samosorn, Apinunuayporn, and Thongkaewkaed