Family name Kleinsasser (Kleinsasser 
) , around the globe, is quite a rare cognomen. The cognomen Kleinsasser is habitual in Austria, where it is quite a rare surname, Canada, where it is a rare surname, and New Zealand. Measured by absolute frequency, this name is the most popular in the United States, Canada, and Austria.
| VARIANT | COUNTRY |
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| Kleinsasser | Germany, Austria, United States, Canada, New Zealand |
| jacob j. kleinsasser American politician, US (b. 1872) |
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| p. p. kleinsasser American politician, US (b. 1878) |
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| etta kleinsasser Austrian geographer, librarian and physician, AT (b. 1881) |
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| j. g. kleinsasser American politician, US (b. 1887) |
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| john p. kleinsasser American politician, US (b. 1897) |
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| john p. kleinsasser (b. 1896) |
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jim kleinsasser player of American football, US (b. 1977) |
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| oskar kleinsasser Austrian university teacher (1929-2001), AT (b. 1929) |
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| leland kleinsasser American politician, US (b. 1934) |
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