Cognomen เกตุคำ (Ketkham 
, เกตุคำ, Ketkam 
) , throughout the world, is a rare surname. The cognomen เกตุคำ is habitual in Thailand, where it is a rare surname, and India, where it is an extremely rare surname. Very seldom, เกตุคำ is the forename as well as the last name.