Cognomen Keijiro (Keijiro 
) , globally, is a rare last name. The last name Keijiro is habitual in Japan, where it is a very rare surname, China, where it is an extremely rare surname, and Venezuela. Also, Keijiro is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Keijiro | Japan, China, United States, Canada, Brazil |
| teratani keijiro Japanese designer, JP |
|