Last name Katakai (Katakai 
) , in the entire world, is an extremely rare surname. Much more frequently, Katakai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Katakai | India |
| tomoya katakai researcher, ORCID id # 0000-0002-4290-7028 |
|
|
| yuko katakai researcher |
|