Family name Gren (Gren 
, グレン 
, สีเขียว 
) , in the entire world, is quite a common cognomen. The last name Gren is habitual in Israel, where it is quite a common surname, Sweden, and Denmark, where it is quite a rare surname. In absolute terms, it most frequently occurs in Thailand, Israel, and Sweden. Likewise, Gren is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gren | Sweden, Poland, United States, Israel, Indonesia |
| グレン | Japan |
| สีเขียว | Thailand |
| Грен | Kazakhstan, Russia, Ukraine |
| friedrich gren AT (b. 1350) |
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| måns gren SE (b. 1450) |
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| ivar gren SE (b. 1450) |
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jonas gren SE (b. 1715) |
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friedrich albrecht carl gren German chemist, DE (b. 1760) |
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erik gren Swedish classical scholar and librarian (1904-1959), SE (b. 1904) |
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| per gren SE (b. 1851) |
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gunnar gren Swedish footballer, SE (b. 1920) |
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| niel a. gren Swedish painter (b. 1893) |
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martin gren Swedish entrepreneur, SE (b. 1962) |
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| gren alabaster cricketer, NZ (b. 1933) |
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| genowefa gren politician, PL (b. 1946) |
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| hans gren Swedish footballer and manager, SE (b. 1957) |
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| roman gren PL (b. 1951) |
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| ing-marie gren (b. 1951) |
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