| B&A | Before and After 
| Others |
| B&A | Boat and Aircraft
| Others |
| B&A | Body and Assembly
| Others |
| B/A | BackAche
| Others |
| B/A | Bank Angle
| Others |
| B/A | Barometric Altimeter
| Others |
| B/A | Buffer Amplifier
| Others |
| BA | Baccalaureus Artium
| Others |
| BA | Bachelor for Administration
| Others |
| BA | Bachelor of Arts
| Degree |
| BA | Bachelor of Attendance
| Others |
| BA | Bachelors of Arts
| Others |
| BA | Bacilus Anthraxis
| Others |
| BA | Back Away
| Others |
| BA | Bad A**
| Others |
| BA | Bad Acting
| Others |
| BA | Bad Angst
| Others |
| BA | Bad Attitude
| Others |
| BA | Bags Absent
| Others |
| BA | Balance Accounting
| Others |
| BA | Balkan-Archiv, Leipzig
| Others |
| BA | Ball Attach
| Others |
| BA | Baltimore Field Office
| Others |
| BA | Banda Aceh, Sumatra, Indonesia
| Others |
| BA | Banker's Acceptance
| Others |
| BA | Banking Anywhere
| Others |
| BA | Bare-Assed
| Others |
| BA | BArenreiter
| Others |
| BA | Bari (Provence)
| Others |
| BA | Barium
| Element |
| BA | Barium A
| Others |
| BA | Barium atomic
| Others |
| BA | Barrel Aged
| Others |
| BA | Bart
| Others |
| BA | Base Area
| Others |
| BA | Bashkir
| Others |
| BA | Basics Accomplished
| Others |
| BA | Bathroom
| Others |
| BA | Batting Average
| Others |
| BA | Battle Area
| Others |
| BA | Battle Arena
| Others |
| BA | Bavarian American
| Others |
| BA | Bay Area
| Others |
| BA | Bay Area Rapid Transit
| Others |
| BA | Be Active
| Others |
| BA | Be All
| Others |
| BA | Bean Assembler
| Others |
| BA | Beautiful Actress
| Others |
| BA | Beauty Advisor
| Others |
| BA | Beef Approximately
| Others |
| BA | Beer Allergy
| Others |
| BA | Before Animaniacs
| Others |
| BA | Before Ascendancy
| Others |
| BA | Begin Array
| Others |
| BA | Behold! Asparagus
| Others |
| BA | Being Agile
| Others |
| BA | Believing Attitude
| Others |
| BA | Bell Aerospace
| Others |
| BA | Below Average
| Others |
| BA | Benares Archive
| Others |
| BA | Bend Allowance
| Others |
| BA | Benedict Arnold
| Others |
| BA | Benzyl Alcohol
| Others |
| BA | Bereavement Allowance
| Others |
| BA | Berlin Attack
| Others |
| BA | Berwick Academy
| Others |
| BA | Best Avoided
| Others |
| BA | Betty Ann
| Others |
| BA | Big Air
| Others |
| BA | Big Animal
| Others |
| BA | Big Arbor
| Others |
| BA | Big Arena
| Others |
| BA | Big Attitude
| Others |
| BA | BIOS Agent
| Others |
| BA | Black Anodized
| Others |
| BA | Blind Angel
| Others |
| BA | Blind Assets
| Others |
| BA | Bloggers Anonymous
| Others |
| BA | Blood Alcohol
| Others |
| BA | Bloody Awdul
| Others |
| BA | Bloody Awful
| Others |
| BA | Bloomin Amazing
| Others |
| BA | Blue Archipelago
| Others |
| BA | Body Armor
| Others |
| BA | Body Array
| Others |
| BA | Bonding Activity
| Others |
| BA | Bone Age
| Others |
| BA | Book Art
| Others |
| BA | Book Arts
| Others |
| BA | Born Again
| Others |
| BA | Bosnia And
| Others |
| BA | Bosnia-Herzegovina
| Others |
| BA | Boston and Albany Railroad (Conrail)
| Others |
| BA | Botanical Area
| Others |
| BA | Bottle Adventure
| Others |
| BA | Box Annealing
| Others |
| BA | Bozo Alert
| Others |
| BA | Brachial Artery
| Others |
| BA | Brain Abscess
| Others |
| BA | Brand Ambassador
| Others |
| BA | Breast Abscess
| Others |
| BA | Breast Augmentation
| Others |
| BA | Breathing Air
| Others |
| BA | Bridging America
| Others |
| BA | Brigada Antigolpe
| Others |
| BA | Bright Annealed
| Others |
| BA | Brightness Adjust
| Others |
| BA | Brilliant Aussie
| Others |
| BA | British Academy
| Others |
| BA | British Aerospace (Corporation)
| Others |
| BA | British Airways
| Others |
| BA | British Aiways
| Others |
| BA | British Arabian
| Others |
| BA | British Association
| Others |
| BA | British Association for the Advancement of Science
| Others |
| BA | Broadcast Architecture
| Others |
| BA | Broken Aeroplane
| Others |
| BA | Broken Arrow
| Others |
| BA | Broken Audio
| Others |
| BA | Bronchial Asthma
| Others |
| BA | Brush Aid
| Others |
| BA | Bryan Amyot, Director
| Others |
| BA | BS and
| Others |
| BA | Budget Analysis
| Others |
| BA | Budget Authority
| Others |
| BA | Bugger All
| Others |
| BA | Build All
| Others |
| BA | Bureaucratic Authoritarian
| Others |
| BA | Bus Alignment
| Others |
| BA | Business Administration
| Others |
| BA | Business Analyst
| Others |
| BA | Business Analysts
| Others |
| BA | Business Associate
| Others |
| BA | Bussiness Analyst
| Others |
| BA | Busy Ambassador
| Others |
| BA | Butyl Acetate
| Others |
| BA | Buyer's Agent
| Others |
| BA | by All
| Others |
| BA | By Arrangement
| Others |