Surname Frein (Phanh 
, Fren 
, Freno 
) , worldwide, is quite a rare family name. The surname Frein is habitual in Laos, where it is quite a rare surname, Israel, and Lebanon. Not in comparison with a country's population, it is the most numerous in Indonesia, the United States, and Laos. Also, Frein is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phanh | Vietnam, Laos, United States, Canada, France |
| Fren | Germany, Indonesia, Italy, United States, France |
| Freno | Germany, Italy, Philippines, United States, France |
| Frein | Germany, Italy, United States, France, Brazil |
|
eric frein American fugitive, US (b. 1983) |
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| brigid curtin frein (b. 1957) |
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| michael frein DE (b. 1961) |
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| jeffrey d frein researcher |
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| yannick frein Dr.-Ing. Institut National Polytechnique de Grenoble 1983 |
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| tom frein college basketball player (1949–1950) Saint Joseph's |
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| barthélemy frein |
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