| Acronym | Definition |
|---|
| BK | Burger King Brands, Inc. (fast food restaurant chain) |
| BK | Black |
| BK | Book |
| BK | Block |
| BK | Break |
| BK | Back (Hyper Logo Turtle Graphics command) |
| BK | Brooklyn |
| BK | Bike |
| BK | Bankruptcy (banking industry) |
| BK | Brook |
| BK | Bank (IRB) |
| BK | Brake |
| BK | Break (logging abbreviation) |
| BK | Booklet |
| BK | Balk (baseball) |
| BK | Banaskantha (India) |
| BK | Bosnia-Herzegovina |
| BK | Bad Kreuznach (Germany) |
| BK | Brahma Kumari (religion) |
| BK | Beyonce Knowles (musical artist) |
| BK | Blue Knights (drum corp, Denver, Colorado) |
| BK | Berkelium |
| BK | Black Knights (Drum Corps; Burbank, CA) |
| BK | Bradykinin |
| BK | Bookkeeping |
| BK | Banjo-Kazooie (video game) |
| BK | Brevin Knight (basketball player) |
| BK | Berryz Koubou (band) |
| BK | Billy Kidman (WWE wrestler) |
| BK | Backstroke (Swimming) |
| BK | Bundeskanzler (German: Federal Chancellor) |
| BK | Blinker |
| BK | Bad Karma |
| BK | Below Knee (amputation) |
| BK | Bikini Kill (band) |
| BK | British Knights |
| BK | Bad Kid |
| BK | Bee's Knees |
| BK | Bar Keel (shipping) |
| BK | Blood Killer (gangs) |
| BK | Blitzkreig (gaming) |
| BK | Baten Kaitos (Gamecube game) |
| BK | Bible Knowledge |
| BK | Bee Keeper |
| BK | Bovine Kidney (cells) |
| BK | Blade Knight (gaming) |
| BK | Bacille de Koch (French: tuberculosis bacteria) |
| BK | Brüel & Kjær (Norcross, GA) |
| BK | Bullous Keratopathy |
| BK | Bakool (postal region, Somalia) |
| BK | Bishwakarma (surname of a so called low caste in Nepal) |
| BK | Balli Kombëtar (National Front Party, Kosovo) |
| BK | Battery Captain (British Army) |
| BK | Bul Kathos ring (Diablo II item) |
| BK | Bronzen Kruis (Dutch) |
| BK | Brinkman-Kramers (approximation in ion-molecular collision quantum calculation) |
| BK | Bhagavan Krishna |
| BK | Bertha Kennedy Elementary School |