Cognomen กาสอน (Teach 
, กาสอน 
) , all around the world, is quite a rare surname. The last name กาสอน is characteristic of Equatorial Guinea, where it is quite a rare surname, Algeria, where it is a rare surname, and Thailand. Measured by absolute frequency, this name is the most popular in the United States, Thailand, and Indonesia. Much less frequently, กาสอน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Teach | Algeria, Bangladesh, Indonesia, Equatorial Guinea, United States |
| กาสอน | Thailand |