Last name Caldairou (Caldairou 
) , around the globe, is a very rare cognomen. The cognomen Caldairou is habitual in France, where it is a rare surname, and Chile, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Caldairou | Chile, France |
| camille-hippolyte caldairou French military personnel, FR (b. 1889) |
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| jean-charles-louis caldairou French military personnel, FR (b. 1892) |
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| henri caldairou French politician, FR (b. 1958) |
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