Last name Lill-Grethe (Lill-Grethe 
) , in the world, is an extremely rare cognomen. Much more prevalently, Lill-Grethe is the forename as well as the last name. Parts of the name also exists independently as a last name Lill, and a first name Grethe.
| VARIANT | COUNTRY |
|---|---|
| Lill-Grethe | Norway, Denmark |