Last name Жайлин (Jailin 
, Jailine 
, Жайлин 
) , across the world, is a rare cognomen. The cognomen Жайлин is characteristic of Honduras, where it is a rare surname, Malaysia, and Venezuela. Not in comparison with a country's population, it is commonest in Malaysia, Venezuela, and France. More prevalently, Жайлин is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jailin | Dominican Republic, Brazil, Malaysia, India, United States |
| Jailine | Dominican Republic, Brazil, Colombia, Guatemala, United States |
| Жайлин | Kazakhstan |