Around the globe, Caoilfhionn (Caoilfhionn 
) is a very rare feminine first name. The forename Caoilfhionn is characteristic of Northern Europe, particularly Ireland, where it is quite a rare female name, and the United Kingdom, where it is a very rare female name.
| VARIANT | COUNTRY |
|---|---|
| Caoilfhionn | United Kingdom, Ireland, Australia, France, United States |
| caoilfhionn dunne Irish actress, IE |
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| caoilfhionn nic pháidín Irish writer and academic, IE |
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| caoilfhionn ní bheacháin Irish academic, IE |
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| caoilfhionn gallagher |
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Lee, Blaney, Deeney, Dorman, Dolley, Grover, Horgan, Hurley, Maguire, Mcgrath, Sweeney, Cassidy, Crowley, Taggart, Travers, Timmons, Nuttall, Machabee, Mcnamara, Brereton, Jennings, O'Connor, Cullen, Mccarrick, Schwab, Morris, Pike, Dodd, Gill, Lane, Fahy, Walt, Ward, Mcgee, Sheil, Casey, Corry, Black, Byrne, Rynne, Davis, Lynch, Trehy, Tighe, Nolan, Hardy, Walsh, Mulvey, and Flynn-Connolly