| 項目 |
| B |
| B 型 |
| B 株 |
| B 規約 |
| B クラス［B class］ |
| B 細胞［B cell］ |
| B 判 |
| B リンパ球［B lymphocyte］ |
| B29［Bomber-29］ |
| b［barn］ |
| BA1［banker's acceptance］ |
| BA2［British Airways］ |
| BA3［Republic of Bosnia-Herzegovina］ |
| B.A.1［Bachelor of Arts］ |
| B.A.2［British Academy］ |
| BA レート［banker's acceptance rate］ |
| Ba［barium］ |
| BADGE（バッジ）［Base Air Defense Ground Environment］ |
| BAF［bunker adjustment factor］ |
| BAH1［Bahrain］ |
| BAH2［Commonwealth of the Bahamas］ |
| .bak［back up］ |
| BAM（バム）［(ロ) Baikalo-Amurskaya Magistral'］ |
| BAN［People's Republic of Bangladesh］ |
| BANCS［Bank Cash Service］ |
| b. and b., B & B［bed and breakfast］ |
| BAR［Barbados］ |
| BART（バート）［Bay Area Rapid Transit］ |
| BASE ジャンプ［Building, Antenna-tower, Span, Earth］ |
| BASIC（ベーシック）［Beginner's All-purpose Symbolic Instruction Code］ |
| .bat［batch］ |
| BB［Barbados］ |
| BB 証券［Broker's Broker Securities Company］ |
| BB レシオ［booking-to-billing ratio］ |
| BBA［Better Business Association］ |
| BBB［Better Business Bureau］ |
| BBC［British Broadcasting Corporation］ |
| BBS［bulletin board system］ |
| BBS 運動［Big Brothers and Sisters Movement］ |
| BBT［basal body temperature］ |
| BC［base camp］ |
| B.C.［before Christ］ |
| B/C［bill for collection］ |
| BC 兵器［biological and chemical weapons］ |
| bcc［blind carbon copy］ |
| BCD［binary-coded decimal notion］ |
| B.C.G.［(フ) vaccin bilie de Calmette et Guerin］ |
| BCL［broadcasting listeners］ |
| BCN［Barcelona］ |
| BCR［bar code reader］ |
| BCS 理論［BCS theory］ |
| BD［People's Republic of Bangladesh］ |
| BDI［Republic of Burundi］ |
| BE1［bioengineering］ |
| BE2［Kingdom of Belgium］ |
| B/E, b.e.［bill of exchange］ |
| Be［beryllium］ |
| Be［(フ) Baume］ |
| B.E.I.［(フ) Banque europeenne d'investissement］ |
| BEL［Kingdom of Belgium］ |
| Bellcore（ベルコア）［Bell Communications Research, Inc.］ |
| bem［bug-eyed monster］ |
| BEN［Republic of Benin］ |
| Benelux［Belgium, the Netherlands, Luxembourg］ |
| BER［Bermuda］ |
| BETRO（ベトロ）［British Export Trade Research Organization］ |
| BF［Burkina Faso］ |
| BFP［biological false positive reaction］ |
| BG1［Biman Bangladesh］ |
| BG2［blue-green］ |
| BG3［Republic of Bulgaria］ |
| BGM［background music］ |
| BGV［background video］ |
| BH［State of Bahrain］ |
| BHA［butylhydroxyanisole］ |
| BHC［benzene hexachloride］ |
| BHN［basic human needs］ |
| BHS［baggage handling system］ |
| BHU［Kingdom of Bhutan］ |
| BI［Republic of Burundi］ |
| Bi［bismuth］ |
| BIAC（ビアク）［Business and Industry Advisory Committee］ |
| B.I.E.［(フ) Bureau international des expositions］ |
| B.I.E.M.（ビーム）［(フ) Bureau international de l'edition mecanique］ |
| BIH［Republic of Bosnia-Herzegovina］ |
| BIL［Billings］ |
| .bin［binary］ |
| BIOS（バイオス）［basic inputoutput system］ |
| BIS（ビス）［Bank for International Settlements］ |
| B-ISDN［Broadband ISDN］ |
| BISTEC［Bangladesh-India-Sri Lanka-Thailand Economic Cooperation］ |
| bit（ビット）［binary digit］ |
| BIZ［Belize］ |
| BJ［Republic of Benin］ |
| BJP［Bharatiya Janata Party］ |
| Bk［berkelium］ |
| BKI［Kota Kinabalu］ |
| BKK［Bangkok］ |
| B/L［bill of lading］ |
| BL 部品［(和) Better Living parts］ |
| BL マーク［(和) Better Living mark］ |
| Bldg.［building］ |
| BLR［Republic of Belarus］ |
| BM1［basal metabolism］ |
| BM2［Bermuda］ |
| BM3［British Museum］ |
| BMD［Ballistic Missile Defense］ |
| BMI［body mass index］ |
| BMP［bone morphogenetic protein］ |
| .bmp［bit map］ |
| BMR［basal metabolic rate］ |
| BMW［(ド) Bayerische Motorenwerke AG］ |
| BMX（ビメックス）［bicycle motocross］ |
| BN［Brunei Darussalam］ |
| BNE［Brisbane］ |
| BNP［Bangladesh Nationalist Party］ |
| BO1［black out］ |
| BO2［brought over］ |
| BO3［Republic of Bolivia］ |
| b.o., B.O.［branch office］ |
| BOD［biochemical oxygen demand］ |
| BOE, B.of E.［Bank of England］ |
| BOJ［Bank of Japan］ |
| BOL［Republic of Bolivia］ |
| BOM［Bombay］ |
| BOO［build, own and operate］ |
| BOS［Boston］ |
| BOT1［build, operate and transfer］ |
| BOT2［Republic of Botswana］ |
| BP1［bills payable］ |
| BP2［British Petroleum］ |
| BPR［business process reengineering］ |
| bps［bits per second］ |
| Bq［becquerel］ |
| BR1［bills receivable］ |
| BR2［breeder reactor］ |
| BR, B.R.3［British Rail］イギリス国有鉄道。私鉄を 1947 年国有化して設立。本社はロンドン。 |
| BR4［Federative Republic of Brazil］ |
| Br［bromine］ |
| BRA［Federative Republic of Brazil］ |
| BRC［Broadcast and Human RightsOther Related Rights Committee］ |
| BRD［(ド) Bundesrepublik Deutschland］ |
| BRM［biological response modifier］ |
| BRN［State of Bahrain］ |
| BRO［Broadcast and Human RightsOther Related Rights Organization］ |
| BRU1［Brunei Darussalam］ |
| BRU2［Bruxelles］ |
| BS1［broadcasting satellite］ |
| BS2［Commonwealth of the Bahamas］ |
| B/S［balance sheet］ |
| BSE［bovine spongiform encephalopathy］ |
| BSEC［Black Sea Economic Cooperation］ |
| BSI［British Standards Institution］ |
| BSP テスト［bromsulphalein test］ |
| BST［British summer time］ |
| BT1［British Telecommunications Corporation］ |
| BT2［Kingdom of Bhutan］ |
| BT 殺虫剤［BT insecticide］ |
| B.T.A.［British Tourist Authority］ |
| BTN［Brussels Tariff Nomenclature］ |
| BTR［bicycle trial］ |
| BTW［by the way］ |
| BUL［Republic of Bulgaria］ |
| BUR［Burkina Faso］ |
| BW［Republic of Botswana］ |
| B.W., B/W［black and white］ |
| BWC［Biological Weapons Convention］ |
| BWR［boiling water reactor］ |
| BWV［(ド) Bach-Werke-Verzeichnis］ |
| BY［Republic of Belarus］ |
| BZ［Belize］ |