Worldwide, Karl Christian (Karl Christian 
) is a rare male forename. The first name Karl Christian is characteristic of Germany, where it is a rare male name, Philippines, and Chile, where it is a very rare boy's name.
| VARIANT | COUNTRY |
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| Karl Christian | Philippines, Sweden, Germany, Spain, Chile |
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karl christian friedrich krause German philosopher, DE (b. 1781) |
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karl christian bruhns German astronomer, DE (b. 1830) |
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| karl christian schmid DE (b. 1787) |
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| karl christian schiller German philologist, folklorist and high school teacher (1811–1873), DE (b. 1811) |
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| karl christian planck German philosopher, DE (b. 1819) |
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karl christian weber German priest, DE (b. 1886) |
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| karl christian müller German author (1900-1975), DE (b. 1900) |
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| karl christian peters German illustrator and painter (1911-1944), DE (b. 1911) |
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Buus, Galvan, Jensen, Julian, Freund, Marinas, Miranda, Sanchez, Abelita, Akiatan, Atienza, Capacia, Kaiblinger, Pensona, Golucan, Lechuga, Taguiam, Zerfass, Mari Xd As, Magnusson, Schoderer, Parre Xd As, Durano, Dagdag, Decasa, Rösel, Hong, Otic, Acain, Cadiz, Caasi, Reyes, Datoc, Gomez, Grava, Lange, Hernandez, Lausa, Tubog, Hecht, Mejias, Santos, Suarez, Aralar, Abalos, Aquino, Patiag, Radtke, Telic, and Hammerschmied