Across the world, Mardeline (Mardeline 
) is a rare girly forename. The first name Mardeline is characteristic of the Democratic Republic of the Congo, where it is a rare girly name, and Philippines, where it is a very rare female name. Very seldom, Mardeline is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Mardeline | Democratic Republic of the Congo, Philippines, Nigeria, Brazil, Venezuela |