Surname 양수 (양수 
, Yangsu 
, Yang-Soo ) , around the globe, is a very rare last name. The cognomen 양수 is characteristic of Thailand, where it is a very rare surname, Malaysia, where it is an extremely rare surname, and China. Much more prevalently, 양수 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 양수 | South Korea |
| Yangsu | China, South Korea, Thailand, United States, India |
| Yang-Soo | United States |