| A&M | Agricultural & Mechanical 
| Others |
| A&M | Agricultural & Mining
| Others |
| A&M | Approach and Methodology
| Others |
| A&M | Audio and Music Data
| Others |
| A&M | Automatic and Manual
| Others |
| A.M | Alternative Medicine
| Others |
| A.M. | Ante Meridiem (take before noon)
| Others |
| a.m. | ante meridiem - morning, before noon
| Others |
| A.M. | Member of the Order of Australia
| Others |
| A/M | Above Mentioned
| Others |
| A/m | Almost
| Others |
| A/m | Amperes Per Meter
| Others |
| A/M | Approach and Moor
| Others |
| AM | Aaron Marshal
| Others |
| AM | About a Million
| Others |
| AM | Absolutely Magnificent
| Others |
| AM | Academic Medicine
| Others |
| AM | Access Method
| Others |
| AM | Account Management
| Others |
| AM | Account Monitoring
| Others |
| AM | Accounts Manager
| Others |
| AM | Accredited Member
| Others |
| AM | Acid Maltase
| Others |
| AM | Acknowledgment Message
| Others |
| AM | Acral Melanoma
| Others |
| AM | Acrosomal Matrix
| Others |
| AM | Active Matrix
| Others |
| AM | Active Monitor
| Others |
| AM | Activity Model
| Others |
| AM | actomycin
| Others |
| AM | Actuator Mechanism
| Others |
| AM | Acute Mastoiditis
| Others |
| AM | Acute Myelofibrosis
| Others |
| AM | Additive Manufacturing
| Manufacturing, Technology |
| AM | Address Management
| Others |
| AM | Addressograph Multigraph
| Others |
| AM | Adductor Magnus
| Others |
| AM | Adhesion Molecule
| Others |
| AM | adis Mumic
| Others |
| AM | Administration and Management Operations Directorate
| Others |
| AM | Administration Manager
| Others |
| AM | Adolescent Medicine
| Others |
| AM | Adrenal Medulla
| Others |
| AM | Adult Male
| Others |
| AM | Advance Mobile
| Others |
| AM | Aeronautica Militare
| Others |
| AM | Aerospace Medicine
| Others |
| AM | After Malik
| Others |
| AM | After Mention
| Others |
| AM | After Midnight
| Others |
| AM | After Morning
| Others |
| AM | Age Major
| Others |
| AM | Age-Matched
| Others |
| AM | Agile Modeling
| Others |
| AM | Ahh Morning
| Others |
| AM | Air Market
| Others |
| AM | Air Mass
| Others |
| AM | Air Mobile
| Others |
| AM | Alert Message
| Others |
| AM | All Mountain
| Others |
| AM | All Music
| Others |
| AM | Allied Master
| Others |
| AM | Allied Mastercomputer
| Others |
| AM | Alpha Male
| Others |
| AM | Alpha Member
| Others |
| AM | Alpha Meter
| Others |
| AM | Alternative Medium
| Others |
| AM | Alveolar Macrophage
| Others |
| AM | AM Amplitude
| Others |
| AM | AM Meaning
| Others |
| AM | Am Monomer
| Others |
| AM | Amateur Much
| Others |
| AM | Amber
| Others |
| AM | Ambulatory Monitoring
| Others |
| AM | Americana Music
| Others |
| AM | Americium
| Element |
| AM | AMerikanisch
| Others |
| AM | Amharic
| Others |
| AM | amikacin
| Others |
| AM | Amina Mohammed
| Others |
| AM | Amiralam
| Others |
| AM | amlodipine
| Others |
| AM | Ammeter
| Others |
| AM | Amnesia
| Others |
| AM | Amniotic Membrane
| Others |
| AM | Amor Ministries
| Others |
| Am | Amos
| Others |
| AM | amoxicillin
| Others |
| AM | Amplifier Module
| Others |
| AM | amplitude
| Others |
| AM | Amplitude Modulated
| Others |
| AM | Amplitude modulation
| Others |
| AM | AMunition
| Others |
| AM | amygdala
| Others |
| AM | Analog Modeling
| Others |
| AM | Animal Mechanicals
| Others |
| AM | Anne Murray
| Others |
| AM | Annie's Man
| Others |
| AM | Anno Mundi
| Others |
| AM | Anno Mundi (year of the world)
| Others |
| AM | Anochi Mi
| Others |
| AM | Anovulatory Menstruation
| Others |
| AM | Antagonistic Message
| Others |
| AM | Ante Meridian
| Others |
| AM | Ante Meridiem
| Time |
| AM | Ante Meridiem (before noon)
| Others |
| AM | ante meridiem before noon
| Others |
| AM | Ante Meridien
| Others |
| AM | Antemeridian Meaning
| Others |
| AM | Antenna Management
| Others |
| AM | anteromedial
| Others |
| AM | Anti Meridian
| Others |
| AM | Anti Meridiem
| Others |
| AM | Anti-Module
| Others |
| AM | antimalarial
| Others |
| AM | Antony Milton
| Others |
| AM | Anytime Maybe
| Others |
| AM | apomorphine
| Others |
| AM | Apparent Movement
| Others |
| AM | Application Manager
| Others |
| AM | Appliction Manager
| Others |
| AM | Applied Mathematics
| Others |
| AM | Arctic Monkeys
| Others |
| AM | Area Manager
| Others |
| AM | Arheologia Moldovei
| Others |
| AM | aria Montgomery
| Others |
| AM | Arithmetic Mean
| Others |
| AM | Arkansas and Missouri Railroad
| Others |
| AM | Arkansas and Missouri Railroad Company
| Others |
| AM | Armand Marseille
| Others |
| AM | Armorer's Mate
| Others |
| AM | Arnoldo Mondadori
| Others |
| AM | AroundMe
| Others |
| AM | Artium Magister
| Others |
| AM | Artium Magister (Master of Arts)
| Others |
| AM | Arun Mohan
| Others |
| AM | Asamblea Majorera
| Others |
| AM | Asdf Movie
| Others |
| AM | Aseptic Meningitis
| Others |
| AM | Asian Male
| Others |
| AM | Aspect Modality
| Others |
| AM | Aspiring Manager
| Others |
| AM | Assembly Member
| Others |
| AM | Assembly Member (Wales)
| Others |
| AM | Assembly Minister
| Others |
| AM | Asset Management
| Others |
| AM | Assistant Manager
| Others |
| AM | Assistant Minister
| Others |
| AM | Associate Manager
| Others |
| AM | Assumption of Moses
| Others |
| AM | Asynchronous Mancheste
| Others |
| AM | Atletico Madrid
| Others |
| AM | Attempted Murder
| Others |
| AM | Attitude Media
| Others |
| am | attometer
| Others |
| AM | Atypical Mycobacteria
| Others |
| AM | Australia Marine
| Others |
| AM | Authn Method
| Others |
| AM | Auto Magic
| Others |
| AM | Automated Mathematician
| Others |
| AM | Automatic Margins
| Others |
| AM | Ave Maria
| Others |
| AM | Aviation Mechanic
| Others |
| AM | Aviation Medicine
| Others |
| AM | Avoidable Mortality
| Others |
| AM | Awakenings Mission
| Others |
| AM | Award of Merit
| Others |
| AM | Away Message
| Others |
| AM | Axia Metalliki (value in metal)
| Others |
| AM | Before Noon
| Others |
| AM | In the Morning, before Noon
| Others |
| AM | Minelayer (Auxiliary, Minelayer)
| Others |
| AM | Morning
| Others |