Family name Kieni (Kieni 
) , around the globe, is a rare last name. The family name Kieni is habitual in Kenya, where it is quite a rare surname, Myanmar, where it is a rare surname, and Greece. Very seldom, Kieni is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kieni | Germany, Kenya, Switzerland, Greece, Myanmar |