Surname 友光 (友光 
, Youguang 
) , all over the world, is a rare last name. The family name 友光 is characteristic of China, where it is a very rare surname, and Chile, where it is an extremely rare surname. More frequently, 友光 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 友光 | China |
| Youguang | Chile, United States, Thailand, China |