Cognomen ญาณพจน์ (Wisdom 
, ญาณพจน์ 
, Yannaphot ) , all over the world, is a common surname. The surname ญาณพจน์ is habitual in Jamaica, where it is quite a common surname, Ghana, and Nigeria. In absolute terms, it is commonest in Nigeria, Ghana, and the United States. Also, ญาณพจน์ is the forename as well as the last name.