Surname Casler (Casler 
) , in all the world, is quite a rare cognomen. The last name Casler is habitual in Israel, where it is quite a rare surname, the United States, where it is a rare surname, and Canada.
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| Casler | Canada, France, Israel, New Zealand, United States |
| john overton casler American soldier; Confederate army during the American Civil War and memoirist, US (b. 1838) |
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| herman casler American inventor, US (b. 1867) |
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| florence casler Canadian businessman (1869-1954), CA (b. 1869) |
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| jeff casler college basketball player (1989–1991) Michigan State |
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| heather e casler researcher |
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| jason c casler researcher (ORCID 0000-0001-9742-9978) |
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| michael d casler researcher |
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