Last name 종수 (종수 
, Jong-Soo 
, Jong-Su ) , throughout the world, is a rare cognomen. The cognomen 종수 is habitual in South Korea, where it is a rare surname, Malaysia, where it is a very rare surname, and Vietnam, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in South Korea, China, and Malaysia. Much more prevalently, 종수 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 종수 | South Korea |
| Jong-Soo | Canada, South Korea, United States, Germany, Chile |
| Jong-Su | South Korea, United States |
| Jongsu | South Korea, China, United States, Malaysia, India |