Cognomen Сидлин (Sydlyn 
, Сидлин 
, Sidlin 
) , all around the world, is a rare family name. The family name Сидлин is characteristic of the United Kingdom, where it is a very rare surname, Israel, and Russia. In absolute terms, this name is the most popular in the United Kingdom, Russia, and the United States. Very seldom, Сидлин is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sydlyn | South Africa |
| Сидлин | Russia |
| Sidlin | United Kingdom, United States, Argentina, France, Israel |
| сидлин, абрам моисеевич RU (b. 1909) |
|