Last name Leuthard (Leuthard 
) , throughout the world, is a rare family name. The cognomen Leuthard is habitual in Switzerland, where it is quite a rare surname, New Zealand, where it is a rare surname, and Argentina, where it is a very rare surname. In absolute terms, it is commonest in Switzerland, the United States, and Argentina. Much less frequently, Leuthard is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Leuthard | Switzerland, Argentina, United States, Germany, Spain |
| leuthard de sundgau (b. 782) |
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| leuthard ii de paris French noble, FR (b. 806) |
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doris leuthard lawyer, politician and former member of the Swiss Federal Council (2006-2018), CH (b. 1963) |
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thomas leuthard Swiss photographer, CH (b. 1971) |
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| leonz leuthard Swiss politician (1925-2016), CH (b. 1925) |
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| kurt leuthard (b. 1919) |
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| urs leuthard Swiss journalist, CH (b. 1963) |
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| deborah leuthard researcher (ORCID 0000-0001-6911-8988) |
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| leuthard ier de paris count of Paris and Fezensac, FR |
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| barbara leuthard Swiss athletics competitor, CH (b. 1981) |
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| manuel leuthard Swiss swimmer, CH (b. 1998) |
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| sarah leuthard German association football player, DE |
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Mr, Lucy, Luke, John, Jess, Jeff, Juan, Tara, Troy, Till, Elsa, Emma, Hope, Sarah, Shaun, Selma, Alisa, Alois, Clara, Betty, Brent, Bryce, Lisa, Gary, Dora, Dale, Ms, Ann, Amy, Ben, Leo, Joe, Joy, Urs, Mary, Mark, Karin, Mike, Alan, Aldo, Carl, Cori, Balz, Beat, Paul, Ross, Rolf, Dana, Alex, and Kathy