Cognomen Takahiko (Takahiko 
, タカヒコ , Такахико 
) , throughout the world, is a common surname. The surname Takahiko is habitual in Eastern Asia, particularly Japan, where it is quite a rare surname, and China, where it is a very rare surname. Very seldom, Takahiko is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Takahiko | Japan, China, United States, Canada, Brazil |
| タカヒコ | Japan |
| Такахико | Russia |
| itai takahiko ichthyologist |
|