Cognomen 佑柱 (佑柱 
) , all around the world, is a very rare surname. The last name 佑柱 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 佑柱 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 佑柱 | China |