English abbreviations from alt to am
- ALT (Either; altimeter or altitude)
- ALTA (Adult Literacy Through the Arts)
- ALTACS (Automated decision Logic Tactical Air Combat Simulation)
- ALTAIR (Advanced Research Projects Agency Long Range Tracking and Instrumentation Radar)
- ALTC (Australian Learning and Teaching Council)
- ALTD (Airborne Laser Target Designator)
- ALTE (Association of Language Testers in Europe)
- ALTERS (Allied Telecommunications Record System)
- ALT ET (Alternating esotropia)
- ALT Hold (Altitude Hold Mode)
- ALTM (ATCCS Layered Telecommunications Model)
- ALTROUTE (Alternate Routing)
- ALTS (Altitude Select)
- ALTTSC (ALTernate Tomahawk Strike Coordinator)
- ALT XT (Alternating exotropia)
- ALU (Alula Airport)
- ALV (Andorra La Vella Airport)
- ALVT (Advanced Low Voltage Technology)
- ALW (Walla Walla Regional Airport)
- ALWC (American League Wild Card)
- ALX (Thomas C. Russell Field)
- ALY (Alexandria International Airport)
- ALZ (Alitak Seaplane Base)
- ALZ-GMC (Alzheimer's Association - Greater Michigan Chapter)
- AM (Aviation Structural Mechanic)
- A.M. (Anno Mundi ("in the year of the world"))