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In all the world, Killien (Killien
) is a very rare principally masculine, but scarcely feminine first name. The forename Killien is habitual in France, where it is a very rare male name, and Nigeria, where it is an extremely rare masculine name. More prevalently, Killien is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Killien | France, Nigeria, United States, United Kingdom, South Africa |