Cognomen Razum (Razum 
) , around the globe, is quite a rare last name. The surname Razum is habitual in Croatia, where it is quite a common surname, Germany, where it is a rare surname, and Austria. In absolute terms, the name is most common in Croatia, Germany, and the United States. Very seldom, Razum is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Razum | Germany, Australia, Croatia, United States, Poland |
| hannes razum DE (b. 1907) |
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| stjepan razum Croatian holocaust denier and Roman Catholic priest (b. 1960) |
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| kathrin razum German translator, DE (b. 1964) |
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| oliver razum (b. 1960) |
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| kristina razum researcher |
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| oliver razum researcher |
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| matthias razum researcher, ORCID id # 0000-0002-5139-5511 |
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| marina razum Croatian handball player, HR (b. 1992) |
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| josip razum (b. 1991) |
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Mr, John, Jean, Tomo, Tina, Nada, Nick, Eric, Emma, Vera, Inna, Ivan, Igor, Mario, Marta, Marcy, Marko, Mateo, Matea, Molly, Milan, Sanda, Luka, Leon, Lara, Gina, Ms, Ana, Amy, Dan, Lea, Joe, Tin, Mary, Mark, Maja, Sanja, Miro, Sara, Sven, Alex, Alen, Anna, Anka, Adam, Paul, Rich, Rick, Mijo, and Alojz