Family name Caetano (Gaetano 
, Caetano 
, Каэтано 
) , throughout the world, is a widespread cognomen. The last name Caetano is characteristic of Portugal, where it is a common surname, Brazil, where it is quite a common surname, and Angola (explore the name in all countries). Likewise, Caetano is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Gaetano | Brazil, France, United States, Germany, Italy |
| Caetano | Brazil, Portugal, Angola, Mozambique, Italy |
| Каэтано | Russia |
| Каетано | Russia, Ukraine |
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caetano da costa PT (b. 1681) |
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| domenico manuel caetano IT (b. 1667) |
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| caetano álvares rodrigues Portuguese sertanista, PT (b. 1680) |
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| caetano de brito e figueiredo PT (b. 1671) |
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| caetano de melo e castro PT (b. 1680) |
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caetano pinto de miranda montenegro Brazilian politician, BR (b. 1748) |
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caetano da anunciação brandão PT (b. 1740) |
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| bernardo de são caetano Roman Catholic bishop (b. 1718) |
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| caetano de lemos telo de meneses Portuguese military personnel, PT (b. 1739) |
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caetano maria lopes gama Brazilian politician, BR (b. 1795) |
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joão caetano Brazilian actor and theatre director (1808-1863), BR (b. 1808) |
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joaquim caetano Brazilian diplomat (1810-1873), BR (b. 1810) |
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| caetano josé teixeira Portuguese businessman from colonial Brazil, PT (b. 1760) |
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caetano alexandre de almeida e albuquerque Portuguese colonial administrator and a military personnel, PT (b. 1824) |
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caetano gaspar de almeida moniz e sousa PT (b. 1820) |
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