Surname 정수 (정수 
, Jeongsu 
, Jeong-Su 
) , around the globe, is a rare family name. The last name 정수 is habitual in South Korea, where it is a rare surname, China, where it is an extremely rare surname, and the United States. Much more frequently, 정수 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 정수 | South Korea |
| Jeongsu | Brazil, United States, South Korea, China |
| Jeong-Su | United States, South Korea, Canada |
| Jung-Soo | United States |