Cognomen Kardu (Kardu 
) , all around the world, is a rare surname. The family name Kardu is characteristic of Malaysia, where it is a very rare surname, Indonesia, and Georgia. Measured by absolute frequency, it is commonest in Indonesia, India, and Nigeria. Also, Kardu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kardu | Philippines, Indonesia, Nigeria, Malaysia, India |