Of unknown origin. Suggested by R. Lowe Thompson to derive from Proto-Indo-European *ḱer- (“horn”), which would mean it is related to English horn. Others have suggested that it comes from Old English Herian, literally "warrior-leader", which is a name for Woden. Another theory is that it derives from the surname Horne.
- Herne the Hunter, an English mythological figure; an antlered ghost associated with Windsor Forest and Great Park in the English county of Berkshire.
- A city in North Rhine-Westphalia, Germany.