Cognomen Cearbhaill (Cearbhaill 
) , globally, is a very rare surname. The last name Cearbhaill is characteristic of Ireland, where it is a rare surname, and Spain, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Cearbhaill | Ireland, Spain |
| eoin séamus ua cearbhaill Irish linguist, IE (b. 1837) |
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| domhnall ó cearbhaill IE (b. 1891) |
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| diarmuid ó cearbhaill Irish academic, IE (b. 1929) |
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| david mac cearbhaill (d. 1289), archbishop of Cashel, IE |
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| mór ingen cearbhaill Irish Queen |
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| maol ruanaidh cam ó cearbhaill Irish composer, IE |
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