Cognomen Regenbogen (Regenbogen 
) , around the world, is a rare family name. The surname Regenbogen is characteristic of Germany, where it is a rare surname, Romania, and Israel. In absolute terms, the name is most common in Germany, the United States, and Romania. Much less frequently, Regenbogen is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Regenbogen | Germany, Netherlands, China, United States, Romania |
| otto regenbogen German veterinarian, DE (b. 1855) |
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| dora regenbogen (b. 1880) |
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| otto regenbogen German classical philologist (1891-1966), DE (b. 1891) |
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| eberhard regenbogen (b. 1904) |
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| arnim regenbogen German philosopher, DE (b. 1939) |
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| thilo götze regenbogen German artist, writer and painter, DE (b. 1949) |
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| ralf regenbogen German association football player, DE (b. 1960) |
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| christina regenbogen researcher |
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| sam j regenbogen researcher |
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| elizabeth regenbogen Peerage person ID=423303 |
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| elliot regenbogen researcher |
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| jacob regenbogen Peerage person ID=423302 |
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| joan hendrik regenbogen |
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| scott e regenbogen |
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