Cognomen ดวงคำ (Duangkham 
, Horoscope 
, ดวงคำ) , around the globe, is quite a rare last name. The surname ดวงคำ is habitual in Thailand, where it is quite a rare surname, Japan, where it is a rare surname, and New Zealand, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Thailand, Japan, and Canada. Very seldom, ดวงคำ is the forename as well as the last name.