HTH

HTH may refer to:

Transportation

 * Handforth railway station, England, station code
 * Hawthorne Industrial Airport, Nevada, US, IATA and FAA LID code
 * Helitt Líneas Aéreas, a Spanish charter airline, ICAO code
 * Heworth Interchange, Tyne and Wear Metro, England, station code

Science and technology

 * Helix-turn-helix, a protein structural motif
 * Homothorax, an arthropod gene

Other uses

 * Hand-to-hand combat
 * High Tech High (disambiguation)
 * House to House Heart to Heart, an American Christian magazine