Last name Kiern (Kiern 
) , worldwide, is a very rare surname. The last name Kiern is habitual in Argentina, where it is a very rare surname, Germany, and the United States. More prevalently, Kiern is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kiern | Germany, Poland, United States, India, Argentina |
| simon kiern German military personnel, DE (b. 1913) |
|