Family name Miillan (Miillan 
) , globally, is a very rare cognomen. The family name Miillan is characteristic of Singapore, where it is a very rare surname, Colombia, and Mexico, where it is an extremely rare surname. Very seldom, Miillan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Miillan | Singapore, Colombia, Mexico |