| Acronym | Definition |
|---|
| LB | Linebacker |
| LB | Libra (Latin: Pound; unit of mass) |
| LB | Lebanon |
| LB | Low Battery |
| LB | Light Blue |
| LB | Long Beach (various locations) |
| LB | Load-Bearing |
| LB | Load Balancing |
| LB | Lane Bryant |
| LB | Labrador |
| LB | Light Bulb |
| LB | Larry Brown (basketball coach) |
| LB | Letter Box |
| LB | Little Brother |
| LB | Legally Blonde |
| LB | Lower Bound |
| LB | Little Boy (atomic bomb) |
| LB | Laguna Beach (California) |
| LB | Log Book |
| LB | Load Balancer |
| LB | Left Back (soccer position) |
| LB | Laura Biagiotti (fashion; Italy) |
| LB | Limp Bizkit (band) |
| LB | Lehman Brothers (investment services company) |
| LB | London Borough |
| LB | Landesbank (German: regional government bank) |
| LB | Low Bay (lighting) |
| LB | Large Business |
| LB | Luria-Bertani |
| LB | Load Bank (generators) |
| LB | Light Bomber |
| LB | Lean Back (rapper) |
| LB | Lloyd Banks (rap artist) |
| LB | Lowboy (in-room safe type for hotels) |
| LB | Long Barrel |
| LB | Local Bus |
| LB | Lost Boys |
| LB | Linux Based |
| LB | Leg-Break (cricket) |
| LB | Landing Barge (US Navy) |
| LB | Left Brain |
| LB | Langmuir-Blodgett |
| LB | Line Brother |
| LB | Loverboy (band) |
| LB | Loop Back |
| LB | Live Birth |
| LB | Lotus Birth (leaving the placenta attached after birth) |
| LB | Lucille Ball |
| LB | Lance Bass |
| LB | Local Boys |
| LB | Lower Brace |
| LB | Laurentian Bank (Canada) |
| LB | Left Bumper (Xbox 360 controller button) |
| LB | Logging and Bookkeeping (web service interface) |
| LB | Low Brass (music score) |
| LB | Lattice Boltzmann |
| LB | Lord British |
| LB | Logistics Base |
| LB | Lloyd Aereo Boliviano (Bolivia, IATA airline code) |
| LB | Louis Braille (inventor of 'braille') |
| LB | Lightbringer (World of Warcraft US server) |
| LB | Limited Base |
| LB | Bank of Lithuania |
| LB | Last Blade (SNK game) |
| LB | Logic Block |
| LB | Local Battery |
| LB | Lutheran Brotherhood |
| LB | Liquid Broth |
| LB | Leaky Bucket (traffic policing algorithms) |
| LB | Loveboat |
| LB | Local Buckling (structural element) |
| LB | Landing Beach |
| LB | Burst Length (Transmission Channel Parameter) |
| LB | Load Buffer |
| LB | Line Booster |
| LB | Liver Biology |
| LB | Left Behind Book Series (Jerry B. Jenkins and Tim F. LaHaye) |
| LB | Lysogeny Broth (bacterial growth medium) |
| LB | Late Babylonian |
| LB | Litter Bearer |
| LB | Photographic Laboratory Specialist (US Navy) |
| LB | Log Bay |
| LB | Lifeburn (gaming, Everquest) |
| LB | Laboratorio Bioquímico (Guatemala, biologic laboratories) |
| LB | Luna Broth |
| LB | Carriers' Semi-Official Stamp (Scott Catalogue prefix; philately) |
| LB | Longest Backup |
| LB | Loss due to Blockage |