Cognomen Hasler (Hasler 
, Hustler 
, Хаслер 
) , globally, is a common surname. The family name Hasler is habitual in Western Europe, particularly Liechtenstein, where it is a widespread surname, Switzerland, where it is quite a common surname, and Austria, where it is quite a rare surname. In absolute terms, this name is the most popular in Switzerland, Germany, and the United States. Much less frequently, Hasler is the forename as well as the last name.
| heinrich hasler CH (b. 1478) |
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| johann hasler Swiss theologian and physician (b. 1548) |
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| richard hasler (1795-1866) (b. 1795) |
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| johann friedrich hasler Swiss lithographer and art educator, CH (b. 1808) |
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| jakob hasler (1825-1880), CH (b. 1825) |
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| gustav adolf hasler (1830-1900), CH (b. 1830) |
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| fanny georgiana jane hasler (1833-1917) (b. 1833) |
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| william wyndham hasler (1833-1905) (b. 1833) |
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| john vaughan hasler Peerage person ID=302712 (b. 1834) |
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bernhard hasler German painter (1884-1945), DE (b. 1884) |
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| richard charles hasler Peerage person ID=658451 (b. 1836) |
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marjorie hasler Irish suffragette, IE (b. 1887) |
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| hans hasler Swiss lithographer and teacher, CH (b. 1840) |
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| ferdinand hasler DE (b. 1842) |
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arthur d. hasler American ecologist, US (b. 1908) |
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