Cognomen Leutwyler (Leutwyler 
) , across the world, is quite a rare surname. The cognomen Leutwyler is characteristic of Western Europe, particularly Switzerland, where it is quite a rare surname, Austria, where it is a rare surname, and France, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in Switzerland, the United States, and France. Very seldom, Leutwyler is the forename as well as the last name.
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| Leutwyler | Switzerland, France, Austria, United States, Argentina |
| heinrich leutwyler Swiss physicist, CH (b. 1938) |
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| matthew leutwyler American film director, US (b. 1969) |
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| samuel leutwyler researcher |
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| kim leutwyler artist, US |
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| heather leutwyler researcher |
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| martin leutwyler correspondence chess player |
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| h. leutwyler Dr. rer. nat. Universität Bern 1962 |
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| sonja leutwyler Swiss opera singer, CH (b. 1981) |
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| jean-pierre leutwyler CH (b. 1973) |
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| renè leutwyler |
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| peter leutwyler |
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Mr, Reto, Ruth, Dave, Lane, Lisa, Lori, Luis, John, Jean, Remy, Juan, Todd, Tina, Eric, Emil, Hans, Herr, Walt, Ueli, Maria, Thea, Rolf, Rosa, Paul, Ms, Jo, Sue, Ben, Kim, Pia, Ric, Guy, Jeb, Tia, Urs, Marc, Mary, Mark, Alex, Abbi, Chad, Clay, Beat, Brad, Kris, Marie, and Maxim