Family name كلى (كلى 
, Kley 
, Klee 
) , all over the world, is a common surname. The last name كلى is characteristic of Germany, where it is quite a common surname, Eswatini, where it is quite a rare surname, and Guatemala. Measured by absolute frequency, it is the most numerous in Germany, the United States, and Guatemala. Very seldom, كلى is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| كلى | Egypt, Syria, Sudan, Iraq, Saudi Arabia |
| Kley | Germany, Malaysia, Netherlands, Brazil, United States |
| Klee | Germany, Guatemala, Malaysia, Brazil, United States |
| Kleye | South Africa, Germany, Brazil |