Last name Flat (Flat 
, Flet 
, Флат 
) , across the world, is quite a rare family name. The surname Flat is characteristic of Kazakhstan, where it is a rare surname, France, and United Arab Emirates. Not in comparison with a country's population, this name is the most popular in France, Germany, and Indonesia. Likewise, Flat is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Flat | Germany, Spain, France, Indonesia, Myanmar |
| Flet | Germany, Spain, France, Argentina, Poland |
| Флат | Kazakhstan, Russia, Kyrgyzstan, Ukraine |
| flat iron Olympic lacrosse player of Canada, CA (b. 1850) |
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| paul flat French writer, FR (b. 1865) |
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| regina flat German association football player, DE (b. 1992) |
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