Cognomen Castroviejo (Castroviejo 
) , across the world, is a rare family name. The surname Castroviejo is habitual in Albania, where it is a rare surname, Spain, and Argentina. In absolute terms, it is the most numerous in Spain, Brazil, and Argentina. Very seldom, Castroviejo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Castroviejo | Brazil, Argentina, Albania, France, Spain |
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amando castroviejo nobajas ES (b. 1874) |
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ramón castroviejo briones Spanish eye surgeon (1904-1987), ES (b. 1904) |
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josé maría castroviejo Spanish falangist writer and journalist (1909-1983), ES (b. 1909) |
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santiago castroviejo Spanish botanist (1946-2009), ES (b. 1946) |
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| concha castroviejo Spanish writer, journalist, ES (b. 1910) |
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jonathan castroviejo Spanish racing cyclist, ES (b. 1987) |
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| javier castroviejo Spanish biologist, ES (b. 1940) |
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| josé maría castroviejo y bolíbar Spanish diplomat, ES (b. 1942) |
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| fernando acuña castroviejo Spanish archaeologist, ES (b. 1945) |
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| nanina santos castroviejo Spanish activist, ES (b. 1951) |
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