Across the world, Ercilla (Ercilla 
) is a rare unisex first name. The first name Ercilla is characteristic of the Democratic Republic of the Congo, where it is a rare male name, Philippines, where it is a very rare female name, and Peru. Measured by absolute frequency, it most frequently occurs in the Democratic Republic of the Congo, Philippines, and Argentina. More frequently, Ercilla is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ercilla | Peru, Philippines, Spain, Democratic Republic of the Congo, Saudi Arabia |
|
alonso de ercilla Spanish soldier and poet (1533-1594), ES (b. 1533) |
|
| fortún garcía de ercilla ES (b. 1492) |
|