Last name Khamta (Khamta 
, คำตา) , all around the world, is a rare surname. The cognomen Khamta is characteristic of Thailand, where it is quite a rare surname, Norway, where it is a very rare surname, and Australia. Measured by absolute frequency, the name is most common in Thailand, India, and Norway. Likewise, Khamta is the forename as well as the last name.