Across the world, Harnack (Harnack 
, Харнак 
) is a rare male given name. The first name Harnack is characteristic of Sub-Saharan Africa, particularly the Democratic Republic of the Congo, where it is a rare male name. More prevalently, Harnack is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Harnack | Germany, United States, Canada, Brazil, Democratic Republic of the Congo |
| Харнак | Russia, Ukraine |
Harnack is also a name for the fictitious and mythical characters: .
| falk harnack German stage and film director, DE (b. 1913) |
|