Alhambra (BARN)
Active Laser Homing (SAUS)
Advanced Light Helicopter - Air Force (PDAA)
Advanced Liquid Hydrogen (ADWA)
Alandale Marine, Hayward, CA - Manufacturer code for watercraft hull identification number (USCG)
Alawa - Language code (ETLW)
Albany - Australia - Airport symbol (OAG)
Aleta Resource Industries - Vancouver Stock Exchange symbol
Alicahue - Chile - Seismograph station code, US Geological Survey (SEIS)
Allan Hills - Antarctic meteorology
Alpha Aviation, Inc. - ICAO designator (FAAC)
Angiolymphoid Hyperplasia - Medicine (MELL)
Anterior Lobe Hormone - Endocrinology (MAE)
Anterior Lobe of Hypophysis - Anatomy (AAMN)
Atypical Lymphoid Hyperplasia - Medicine
Australian Light Horse (SAUO)