Last name سلي (Sly 
, Sli 
, سلي 
) , all over the world, is a common surname. The cognomen سلي is habitual in Ghana, where it is quite a rare surname, Australia, and Algeria. Measured by absolute frequency, it is the most numerous in the United States, Ghana, and Algeria. Also, سلي is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sly | Kenya, United States, Ghana, United Kingdom, Algeria |
| Sli | Australia, United Kingdom, United States, Nigeria, Algeria |
| سلي | Iraq, Egypt, Sudan, Syria, Saudi Arabia |