Cognomen Elniff-Larsen (Elniff-Larsen 
) , in the world, is an extremely rare last name. The last name Elniff-Larsen is characteristic of Northern Europe, particularly the United Kingdom, where it is a very rare surname. Parts of the name also exists independently as a last name Elniff, and a last name Larsen.
| VARIANT | COUNTRY |
|---|---|
| Elniff-Larsen | United Kingdom |