Last name Karuko (Karuko 
) , in all the world, is a rare surname. The last name Karuko is characteristic of Philippines, where it is a very rare surname, Turkey, and India, where it is an extremely rare surname. More prevalently, Karuko is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Karuko | Japan, Turkey, Philippines, United States, India |