Cognomen Neileen (Neileen 
) , across the world, is an extremely rare last name. The family name Neileen is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Much more prevalently, Neileen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Neileen | Philippines, United Kingdom, United States |