| Akronim | Penjelasan |
| B |
| B | Bersara, Boron, Kumpulan Darah, Not Muzik, Plat Kenderaan Selangor |
| BA | Bachelor of Arts (Sarjana Muda Sastera). |
| Ba | [kimia] Barium (Barium). |
| BAC | Blood Alcohol Content. |
| BAFIA | Banking And Financial Institutions Act 1989AD (Akta Perbankan dan Institusi Kewangan 1989AD). |
| BAM | Badminton Association of Malaysia (Persatuan Badminton Malaysia). |
| BANANA | Build Absolutely Nothing Anywhere Near Anything. |
| BAPP | Bank Antarabangsa bagi Pemulihan dan Pembangunan (International Bank for Reconstruction and Development). |
| BASF | [Jerman] Badische Anilin und Soda Fabrik (Baden Aniline and Soda Factory). |
| BATA | [tidak rasmi] Buy And Throw Away. |
| BB | Bangsa-bangsa Bersatu, Brigitte Bardot, [tidak rasmi] Bukit Bintang. |
| BBC | British Broadcasting Corporation (Perbadanan Penyiaran British). |
| BBE | Bursa Buruh Elektronik (Electronic Labour Exchange). |
| BBS | Bulletin Board System. |
| BC | Before Christ (Sebelum Masehi). |
| BCG | Bacille-Calmate-Guerin. |
| BCIC | Bumiputera Commercial and Industrial Community. |
| b.d. | bahasa dalam (royal language). |
| BDSSHAM | Bursa Dagangan Sekuriti dan Sebut Harga Automasi Malaysia (Malaysian Exchange of Securities Dealing and Automated Quotation). |
| Be | [kimia] Beryllium (Berilium). |
| BEER | [tidak rasmi] Beginning Enjoy, Ending Regret. |
| BERNAMA | BERita NAsional MAlaysia (Malaysia News Agency). |
| Bh | [kimia] Bohrium (Bohrium). |
| b.h. | bahasa halus (polite language). |
| Bhd. | Berhad. |
| Bi | [kimia] Bismuth (Bismut). |
| BIDS | Bond Information and Dissemination System. |
| Bil. | [kitab injil] Bilangan (Numbers). |
| bil. | bilangan. |
| BIMP-EAGA | Brunei Darussalam, Indonesia, Malaysia, and the Philippines-East ASEAN Growth Area. |
| Bio. | Biologi (Biology). |
| BIOS | Basic Input Output System. |
| BITMB | Bank Industri dan Teknologi Malaysia Berhad. |
| BJ | [tidak rasmi] Blow Job. |
| Bk | [kimia] Berkelium (Berkelium). |
| b.k. | bahasa kasar (rude language). |
| BKAL | Bursa Kewangan Antarabangsa Labuan (Labuan International Financial Exchange). |
| bkn. | berkenaan (concerning). |
| BKP | Bahagian Kemajuan Pentadbiran. |
| BL | Bachelor of Laws (Legum Baccalaureus). |
| BLR | Base Lending Rate (Kadar Berian Pinjaman Asas). |
| BM | Bahasa Malaysia/Melayu, [tidak rasmi] Belakang Mati. |
| BMI | British-Malaysian Institute. |
| BMW | [tidak rasmi] Bas Mini Wilayah, Bavarian Motor Works, [tidak rasmi] Big Money Waste, [tidak rasmi] Brings More Women. |
| BN | Barisan Nasional (National Front). |
| BNM | Bank Negara Malaysia, Berita Nasional Malaysia (Malaysia News Agency). |
| BO | Body Odour. |
| BOJ | Bank Of Japan. |
| BOO | Build-Own-Operate. |
| BOP | Balance Of Payments (Imbangan Pembayaran). |
| BOT | Build-Operate-Transfer. |
| BP | British Petroleum. |
| b.p. | bagi pihak, bahasa percakapan (colloquial language). |
| BPA | Badan Perisik Amerika (Central Intelligence Agency). |
| BPAs | Bilateral Payment Arrangements. |
| bpd. | barrels per day. |
| BPIMB | Bank Pembangunan dan Infrastruktur Malaysia Berhad (Development and Infrastructure Bank Malaysia Limited). |
| BPM | Bahasa dan Persuratan Melayu, Bank Pertanian Malaysia (Agriculture Bank of Malaysia). |
| BPO | Business Process Outsourcing (Khidmat Proses Perniagaan Luaran). |
| BPPH | Bank Pembangunan Pelbagai Hala (Multilateral Development Bank). |
| Br | [kimia] Bromine (Bromin). |
| Br. | Brunei. |
| BSA | Bilateral Swap Arrangements (Pengaturan Swap Dua Hala). |
| B.Sc. | Bachelor of Science (Sarjana Muda Sains). |
| B.Sh. | Bachelor of Shari'ah (Sarjana Muda Syariah). |
| b.s.j. | batu satu jam. |
| BSN | Bank Simpanan Nasional (National Savings Bank), Biro Siasatan Negara. |
| Bt. | Bukit. |
| bt. | binti. |
| BWT | Bayar Waktu Terima. |
| BYOB | Bring Your Own Booze, Bottle, Babe, Boyfriend, etc. |
