Surname Castellsagué (Castellsagué 
) , all over the world, is an extremely rare cognomen. The family name Castellsagué is habitual in Southern Europe, particularly Spain, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Castellsagué | Spain |
| xavier castellsagué researcher ORCID ID = 0000-0002-0802-3595, ES (b. 1959) |
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| ester castellsagué researcher, ORCID id # 0000-0003-1298-9971 |
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| marc castellsagué association football manager, ES (b. 1988) |
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| marc castellsagué |
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