Cognomen תנאי (Tanai 
, תנאי 
) , in the entire world, is quite a rare family name. The last name תנאי is characteristic of Hungary, where it is quite a rare surname, Afghanistan, and United Arab Emirates, where it is a rare surname. In absolute terms, this name is the most popular in Afghanistan, Hungary, and Myanmar. Likewise, תנאי is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tanai | Myanmar, Hungary, Thailand, India, Afghanistan |
| תנאי | Israel |