Cognomen Cass (Cass 
, كاس 
, 卡斯 
, along with others...) , across the world, is a common last name. The last name Cass is characteristic of Australia, where it is quite a rare surname, the United Kingdom, and Ireland. Measured by absolute frequency, this name is the most popular in the United States, the United Kingdom, and Sudan. Also, Cass is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cass | United Kingdom, Canada, Australia, South Africa, United States |
| كاس | Algeria, Iraq, Egypt, Iran, Sudan |
| 卡斯 | China |
| キャス | Japan |
| קאס | Israel |
| Касс | Ukraine, Kazakhstan, Russia |
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john cass British politician and slave trader (b. 1666) |
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| jonathan cass American officer, US (b. 1753) |
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george washington cass American businessman, railroad executive (1810-1888), US (b. 1810) |
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thomas cass Union Army officer and businessman, US (b. 1821) |
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| frederick cass (b. 1787) |
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| george nelson cass Amerikaans; schilder; 1806; 1882; Boston (Massachusetts), US (b. 1806) |
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frank cass politician in Massachusetts, US, US (b. 1857) |
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cass gilbert American architect (1859-1934), US (b. 1859) |
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| mary sophia cass 1812-1882 (b. 1812) |
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godfrey cass Australian actor, AU (b. 1867) |
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| thomas cass New Zealand surveyor, grazier and politician (1817-1895), NZ (b. 1817) |
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| frederick charles cass rector of the parish of Monken Hadley, north London (b. 1824) |
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| arthur herbert cass (b. 1828) |
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| george cass Merchant and politician in New South Wales, Australia, GB (b. 1844) |
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melnea cass American activist, US (b. 1896) |
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