Family name Itoki (Itoki 
) , worldwide, is a very rare surname. The family name Itoki is habitual in Japan, where it is a very rare surname, Nigeria, where it is an extremely rare surname, and the United States. More prevalently, Itoki is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Itoki | India, Japan, Nigeria, United States, South Africa |