Cognomen Couceiro (Couceiro 
) , throughout the world, is quite a rare family name. The cognomen Couceiro is habitual in Portugal, where it is quite a common surname, Cabo Verde, and Angola, where it is quite a rare surname. In absolute terms, it is the most numerous in Portugal, Brazil, and Angola. Much less frequently, Couceiro is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Couceiro | Portugal, Spain, Brazil, Angola, Argentina |
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josé joaquim de paiva cabral couceiro PT (b. 1830) |
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henrique mitchell de paiva couceiro Portuguese colonial administrator (1861-1944), PT (b. 1861) |
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antonio couceiro freijomil ES (b. 1888) |
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miguel antónio do carmo de noronha de paiva couceiro Portuguese military personnel and colonial administrator (1909-1979), PT (b. 1909) |
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| l. couceiro (b. 1851) |
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| pedro campos couceiro Spanish politician, ES (b. 1871) |
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| francisco mañach couceiro (b. 1861) |
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| benito couceiro gómez ES (b. 1882) |
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| pilar lago couceiro ES (b. 1900) |
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josé couceiro footballer, PT (b. 1962) |
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| carlos lago couceiro ES (b. 1906) |
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| ramón fraga couceiro ES (b. 1907) |
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pedro couceiro Portuguese racing driver, PT (b. 1970) |
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henrique mitchell de paiva cabral couceiro 19/20th-century Portuguese soldier, colonial governor, and politician, PT |
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| josé antonio rodríguez couceiro Spanish journalist (b. 1938) |
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