Last name Hailín (Hailín 
) , in all the world, is a very rare surname. The family name Hailín is characteristic of Northern Europe, particularly Ireland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Hailín | Ireland |
| bernard ó hailín Irish Fine Gael politician, IE (b. 1944) |
|
Darren, Maitiú, and Proinnsias