Surname Usako (Usako 
) , across the world, is a very rare last name. The cognomen Usako is characteristic of Thailand, where it is a very rare surname, Nigeria, and India, where it is an extremely rare surname. More prevalently, Usako is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Usako | Japan, Nigeria, United States, Thailand, India |