Last name Herculan (Herculan 
) , around the globe, is an extremely rare surname. The surname Herculan is habitual in Latin America and the Caribbean, particularly Brazil, where it is an extremely rare surname. Predominantly, Herculan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Herculan | India, South Africa, Brazil, United States |