Worldwide, Frein (Phanh 
, Fren 
, Freno 
) is a rare largely male, but infrequently girly forename. The first name Frein is characteristic of Indonesia, where it is a rare boy's name, Israel, where it is a rare feminine name, and Saudi Arabia, where it is a very rare boy's name. In absolute terms, the name is most common in Indonesia, the United States, and Vietnam. Likewise, Frein is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Phanh | United States, Vietnam, France, Laos, Canada |
| Fren | United States, France, Indonesia, Germany, Italy |
| Freno | United States, France, Philippines, Germany, Italy |
| Frein | United States, France, Germany, Italy, Brazil |