Amer - ASC
- American Automobile Labelling Act
- American Free Trade
- American Free Trade Agreement
- American Industrial Classification
- American Industrial Classification System
- American Motors
- American produced
- american standard pipe thread
- AMIA
- amidship
- Amilcar
- ammeter
- ammonia
- amp
- amp/hr. rating
- amperage
- amperage rating
- ampere
- ampere hour capacity
- ampere turns
