Around the world, Mer-Ciel (Mer-Ciel 
) is a rare girly first name. The forename Mer-Ciel is characteristic of Sub-Saharan Africa, particularly the Democratic Republic of the Congo, where it is a rare feminine name. Parts of the name also exists independently as a first name Mer, and a first name Ciel.
| VARIANT | COUNTRY |
|---|---|
| Mer-Ciel | Democratic Republic of the Congo |