English abbreviations from hanys to hasl
- HANYS (Healthcare Association of New York State)
- HAO (Butler County Regional Airport)
- HAOA (Histiocytosis Association Of America)
- HAP (Long Island Airport)
- HAPC (Help A Poor Child)
- HAP-EP (Humanitarian Assistance Program-Excess Property)
- HAPL (High Average Power Lasers)
- HAPPY (Honest, Active, Passionate, Patient, Young)
- HAQ (Hanimaadhoo Airport)
- HAR (Capital City Airport (FAA: CXY))
- HARC (Harmonious abnormal retinal correspondence)
- HARD (Helmet Assisted Radar Detection)
- HARL (Hearing Aid Research Laboratory)
- HARM (High Speed Anti - Radiation Missile)
- HARP (Historic Arkansas Riverwalk of Pueblo)
- HARPS ((instrumentation) High Accuracy Radial velocity Planet Searcher, a high-precision spectrograph installed on the ESO 3.6m telescope)
- HARRT (Humanitarian Assistance Rapid Response Team)
- Harry (Harold)
- HAS (Holmes–Adie syndrome)
- HASA (High Altitude SIGINT Architecture)
- HASC (House Armed Services Committee)
- HASCII (Hebrew in ASCII characters)
- HASE (HIV+ AIDS Search Engine)
- HASG (Homeopathic Affiliated Study Group)
- HASH (hashish)
- HASI ((instrumentation) Huygens Atmosphere Structure Instrument, an instrument on the Huygens probe)
- HASL (Hybrid Anaerobic Solid Liquid)
