Surname ใจแสง (Jaisang 
, ใจแสง , Jaisaeng ) , around the world, is a rare cognomen. The cognomen ใจแสง is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, ใจแสง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jaisang | India, Canada, United States, Thailand |
| ใจแสง, Jaisaeng, Jaichaeng | Thailand |