Cognomen เจตจำนงค์ (Chetchamnong 
, เจตจำนงค์) , all over the world, is a very rare family name. The family name เจตจำนงค์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, เจตจำนงค์ is the forename as well as the last name.