| Akronim | Penjelasan |
| A |
| AA | Afro-Asia, Alcoholics Anonymous, Asia-Afrika, Automobile Association. |
| AAAAAA | Association Against Acronym And Abbreaviation Abuse. |
| AB | Anggaran Belanja. |
| Abd. | Abdul. |
| ABC | Abjad A,B,C dan seterusnya, Air Batu Campur, Asia Badminton Championship, American Broadcasting Company. |
| ABIM | Angkatan Belia Islam Malaysia. |
| ABM | Agriculture Bank of Malaysia (Bank Pertanian Malaysia). |
| ABMI | Asian Bond Markets Initiative (Inisiatif Pasaran Bon Asia). |
| ABS | Asset-Backed Securities (Sekuriti Bersandarkan Aset). |
| AC | Alternating Current. |
| Ac | [kimia] Actinium (Aktinium). |
| ACAPLPL | Akta Cukai Aktiviti Perniagaan Luar Pesisir Labuan 1990AD (Labuan Offshore Business Activity Tax Act 1990AD). |
| Act. | [kitab injil] Acts (Kisah Rasul-/Para Rasul). |
| AD | Ahli Diplomat (Diplomatic Corps), [tidak rasmi] Anchor Draught, Angkatan Darat, [Latin] Anno Domini (In the Year of our Lord) (Tahun Masehi). |
| AD LIB | [Latin] AD LIBitum (Freely). |
| ADAM | [tidak rasmi] Ada Dangdut Ada Maksiat. |
| ADB | Asian Development Bank. |
| ADD | Akhbar Dalam Darjah. |
| ADIL | [tidak rasmi] Anwar di Dalam Isteri di Luar (Anwar inside and (his) wife outside). |
| ADN | Ahli Dewan Negeri/Negara. |
| ADR | Ahli Dewan Rakyat. |
| ADRI | Angkatan Darat Republik Indonesia. |
| ADSL | Asymmetrical Digital Subscriber Line. |
| ADUN | Ahli Dewan Undangan Negeri (State Assemblyman). |
| AFAS | ASEAN Framework Agreement on Services. |
| AFTA | ASEAN Free Trade Area (Kawasan Perdagangan Bebas ASEAN). |
| Ag | [kimia] Argentum (id est Silver) (Argentum). |
| AGMARIS | Agriculture Marketing Information Systems (Sistem Maklumat Pemasaran Pertanian). |
| AH | [Latin] Anno Hegirae (In the Year of the Hegira) (Tahun Hijrah). |
| AI | artificial intelligence (kecerdasan buatan). |
| AIA | ASEAN Investment Area. |
| AIDS | Acquired Immuno-Deficiency Syndrome (Sindrom Kurang Daya Tahan Penyakit), [tidak rasmi] After Intercourse Die Standing, [tidak rasmi] Another Idiot Dying Story. |
| AIJV | ASEAN Industrial Joint Venture. |
| AIM | Amanah Ikhtiar Malaysia, Anugerah Industri Muzik |
| a/k | anak kepada. |
| ak | anak. |
| AKN | Akta Keselamatan Negara (Internal Security Act). |
| Al | [kimia] Aluminium or Aluminum (Aluminium). |
| a/l | anak lelaki kepada. |
| AM | Amplitude Modulation (radio), [Latin] Ante Meridiem (before noon). |
| Am | [kimia] Americium (Amerisium). |
| Am. | [kitab injil] Amos (Amos). |
| AMN | Ahli Mangku Negara. |
| Amo. | [kitab injil] Amos (Amos). |
| AMPS | Advanced Mobile Phone System. |
| Ams. | [kitab injil] Amsal (Proverbs). |
| AMWA | Akaun Mata Wang Asing (Foreign Currency Accounts). |
| AN | Akauntan Negara. |
| a.n. | atas nama. |
| ANGKASA | ANGkatan KerjAsama kebangSAan. |
| ANM | Arkib Negara Malaysia. |
| ANSI | American National Standards Institute. |
| Ant. | Antropologi (Anthropology). |
| AOL | America OnLine. |
| AP | Associated Press. |
| a/p | anak perempuan kepada. |
| APD | Agenda Pembangunan Doha (Doha Development Agenda). |
| APEC | Asia Pacific Economic Cooperation (Kerjasama Ekonomi Asia Pasifik). |
| API | Air Pollution Index. |
| APIK | Akta Perbankan dan Institusi Kewangan 1989AD (Banking And Financial Institutions Act 1989AD). |
| APM | Automatic Pricing Mechanism (Mekanisme Harga Automatik). |
| APN | Akademi Percukaian Negara (National Tax Academy). |
| APP | Agensi Promosi Pelaburan (Investment Promotion Agency), Akta Penyelarasan Perindustrian 1975AD (Industrial Coordination Act 1975AD). |
| Apr. | April (April). |
| APRI | Angkatan Perang Republik Indonesia. |
| Ar | [kimia] Argon (Argon). |
| Ar. | Arab. |
| ark. | arkaik. |
| A.S. | Amerika Syarikat. |
| As | [kimia] Arsenic (Arsenik). |
| a.s. | alaihissalam. |
| ASA | American Standards Association (now ANSI). |
| ASAS 50 | Angkatan Sasterawan 1950. |
| ASB | Amanah Saham Bumiputera. |
| ASCII | American Standard Code for Information Interchange (Kod Piawai Amerika bagi Saling Tukar Maklumat). |
| ASEAN | Association of Southeast Asian Nations (Pertubuhan Negara-negara Asia Tenggara). |
| ASEAN+3 | ASEAN + China, Japan, and the Republic of Korea (ASEAN + China, Jepun, dan Republik Korea). |
| ASEM | ASia-Europe Meeting. |
| a.s.f. | and so forth (dan sebagainya). |
| ASN | Amanah Saham Nasional (Unit Trust Fund). |
| a.s.o. | and so on (et cetera). |
| ASP | Approved Service Projects. |
| Ast. | Astronomi (Astronomy). |
| A.T. | Asia Tenggara. |
| At | [kimia] Astatine (Astatin). |
| ATM | Automated Teller Machine (Mesin Juruwang Automatik), Angkatan Tentera Malaysia |
| a.t.r. | and the rest (et cetera). |
| ATUR | Automatic Telephone Using Radio. |
| Au | [kimia] Aurum (id est Gold) (Aurum atau Emas). |
| AURI | Angkatan Udara Republik Indonesia. |
| Aug. | August (Ogos). |
| AWOL | Absent WithOut Leave. |
| Ayb. | [kitab injil] Ayub (Job). |
