Last name แสงมูล (Sangmun 
, Sangmoon 
, แสงมูล ) , around the world, is a rare surname. The family name แสงมูล is habitual in Thailand, where it is a rare surname, China, where it is an extremely rare surname, and the United States. More frequently, แสงมูล is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sangmun | China, South Korea, Thailand, United States |
| Sangmoon | China, South Korea, Thailand, United States, Canada |
| แสงมูล, Sangmool | Thailand |