HHN

HHN is an abbreviation for:

• Frankfurt-Hahn Airport , civil airport in Rhineland-Palatinate according to the IATA code
• Hirschhorn (Neckar) , as UN / LOCODE
• Heilbronn University , University of Applied Sciences with a focus on technology, economics and computer science
• Human Help Network , German, internationally active children's aid organization
• Hypothalamic-pituitary-adrenal axis in physiology

See also:

Wiktionary: HHN  - explanations of meanings, word origins, synonyms, translations

This is a disambiguation page for differentiating between several terms identified with the same word.