Surname イタイ (Itay 
, イタイ 
) , across the world, is quite a rare last name. The cognomen イタイ is characteristic of Hungary, where it is quite a rare surname, Ethiopia, and Israel, where it is a rare surname. In absolute terms, it is the most numerous in Ethiopia, Philippines, and Hungary. Likewise, イタイ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Itay | Ethiopia, Philippines, Hungary, United States, Israel |
| イタイ | Japan |