Family name Witthaus (Witthaus 
) , across the world, is a rare last name. The family name Witthaus is habitual in Denmark, where it is a rare surname, Germany, and the United States, where it is a very rare surname. Much less frequently, Witthaus is the forename as well as the last name.
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| Witthaus | Germany, South Africa, United States, Argentina, Denmark |
| johann ludwig witthaus (b. 1795) |
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| rudolph august witthaus American physician, chemist, and toxicologist (1846-1915), US (b. 1846) |
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| wilhelm witthaus German politician, DE (b. 1900) |
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| bernhard witthaus German politician (1903-1971), DE (b. 1903) |
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| michael w witthaus researcher (ORCID 0000-0001-8022-9136) |
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| jan-henrik witthaus (b. 1970) |
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| elke witthaus researcher |
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| matthias witthaus German field hockey player, DE (b. 1982) |
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| ralf witthaus (b. 1973) |
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Mr, Kurt, Ralf, Ruth, Dena, Dawn, Drew, Gary, Gerd, Lise, Lori, Lynn, Jack, Josh, John, Joan, Jodi, Jens, Jill, Nick, Eric, Olaf, Bill, Abby, Anna, Alex, Ms, Max, Sue, Ali, Ben, Kai, Ken, Kim, Rob, Ron, Monty, Dan, Jan, Jã, Tim, Marc, Mary, Mark, Macy, Mike, Seth, Sven, Lea, and Miles