Cognomen Kuwako (Kuwako 
) , in the world, is a rare last name. The surname Kuwako is habitual in Japan, where it is a rare surname, the United Kingdom, where it is an extremely rare surname, and the United States. More frequently, Kuwako is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kuwako | Japan, China, United Kingdom, United States, Brazil |