Cognomen Cerdeira (Cerdeira 
) , all around the world, is quite a common surname. The family name Cerdeira is habitual in Portugal, where it is quite a common surname, Argentina, where it is quite a rare surname, and Panama. Not in comparison with a country's population, it most frequently occurs in Brazil, Portugal, and Argentina. Very seldom, Cerdeira is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Cerdeira | France, Brazil, Portugal, Argentina, Spain |
| josé benito cerdeira ES (b. 1874) |
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| clemente cerdeira fernández Spanish diplomat, ES (b. 1887) |
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| josé antonio franco cerdeira Spanish politician, ES (b. 1939) |
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| fernando cerdeira Argentine physicist, AR (b. 1943) |
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| carmen cerdeira Spanish politician (1958-2007), ES (b. 1958) |
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| cláudio cerdeira BR (b. 1954) |
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| cláudio vinícius cerdeira (b. 1954) |
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| antónio pedro cerdeira Portuguese actor, PT (b. 1970) |
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| josé miguel cerdeira researcher |
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| victoria cerdeira researcher (ORCID 0000-0002-4324-1686) |
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| louise cerdeira researcher |
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| cláudio daniel cerdeira researcher |
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| jorge orestes lasbarrères cerdeira Ph.D. Universidade de Lisboa 1990 |
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| ana t s cerdeira researcher |
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| a sofia cerdeira researcher (ORCID 0000-0002-7643-3537) |
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