In the entire world, Katharin (Katharin 
) is a rare primarily girly, but very seldom masculine first name. The first name Katharin is characteristic of the United States, where it is a very rare girly name, Germany, and Australia. In absolute terms, it is commonest in India, the United States, and Germany. Much less frequently, Katharin is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Katharin | Germany, Myanmar, India, United States, United Kingdom |
| katharin c. rebay Austrian archaeologist, AT (b. 1977) |
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| katharin lunay accused of witchcraft, GB |
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| katharin diana rivers pollock Peerage person ID=551476 |
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| katharin kelker |
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Moon, Joseph, Jensen, Taylor, Thomas, Wilson, Zimpel, Ziskin, Steimel, Karsten, Roberts, Lindsey, Johnson, Timmons, Newkirk, Casillas, Davidson, Lisenbee, Schneider, Blackerby, Rodriguez, Fernandis, Grimes, Ducett, Rundus, Kiefer, Mraz, Shaw, Cook, Bond, Dyer, Webb, Unke, Moore, Sands, Smith, Zimmerman, Baker, Brown, Dixon, Gates, Laird, Lyons, Jones, Morris, Miller, Berube, Kelker, Brink, and Chamberlain