| Acronym | Definition |
|---|
| PB | Problem |
| PB | Peanut Butter |
| PB | Pushbutton |
| PB | Plumbum (Latin for the metallic element lead) |
| PB | Polished Brass |
| PB | Packard Bell |
| PB | PunkBuster (gaming anti-cheat project) |
| PB | Point-Blank |
| PB | Playboy (magazine) |
| PB | Publications |
| PB | Paperback (book edition) |
| PB | Pacific Beach (San Diego, California) |
| PB | Personal Best (athletic record) |
| PB | Playback |
| PB | Plastic Bag (various companies) |
| PB | Prison Break (TV Series) |
| PB | Pitney Bowes |
| PB | Paraíba (Brazilian state) |
| PB | PowerBook (Macintosh) |
| PB | Princess Bubblegum (Adventure Time) |
| PB | Powerbuilder (Sybase software development tool) |
| PB | Peripheral Blood |
| PB | Public Bank |
| PB | Phenobarbital (drug) |
| PB | Played By (roleplay gaming) |
| PB | Power Ball (lottery) |
| PB | Photobucket (online image hosting service) |
| PB | Pit Bull |
| PB | Passed Ball (baseball) |
| PB | Private Banking |
| PB | Power Brakes |
| PB | Pacific Beach (California) |
| PB | Pandora's Box |
| PB | Performance-Based |
| PB | Public Broadcasting |
| PB | Photobook |
| PB | Pot Belly |
| PB | Primitive Baptist (religion) |
| PB | President's Budget |
| PB | Point B |
| PB | Petabyte (1,024 terabytes) |
| PB | Panic Bar (various companies) |
| PB | Paintbrush |
| PB | Pocket Book |
| PB | Polybutylene |
| PB | Paul's Boutique (UK) |
| PB | Post Box |
| PB | Parts Breakdown |
| PB | Personal Business |
| PB | Peroneus Brevis (muscle) |
| PB | Potty Break |
| PB | Presiding Bishop |
| PB | Prussian Blue (ferric ferrocyanide antidote for Cs 137) |
| PB | Particleboard |
| PB | Princess Bride |
| PB | Push-button Switch |
| PB | Private Business |
| PB | Poor Bastard |
| PB | Paint Ball |
| PB | Punch Brothers (band) |
| PB | Page Break (proofreading; also HTML code) |
| PB | Panera Bread (restaurant) |
| PB | Professional Bookkeeper |
| PB | Pry Bar |
| PB | Performance Bond |
| PB | Points Behind (hockey) |
| PB | Pyridostigmine Bromide |
| PB | Private Brand |
| PB | Printed Board |
| PB | Patrol Boat |
| PB | Parker Brothers (game company) |
| PB | Peptide Bond |
| PB | Particle Beam |
| PB | Penalty Box (hockey) |
| PB | Payback Period |
| PB | Publication Bias |
| PB | Program Block |
| PB | Plate Block |
| PB | Parsons Brinckerhoff, Inc. (engineering firm) |
| PB | Paddington Bear (children's storybook character) |
| PB | Project Book |
| PB | Pull Box |
| PB | Property Bond (criminal justice) |
| PB | Patrol Bomber (US aircraft designation of WW II) |
| PB | Proportional Band |
| PB | Plat Book |
| PB | Pelvic Bone |
| PB | Prime Broker |
| PB | Preburner (US NASA) |
| PB | Power Bomb (wrestling move) |
| PB | Paddle Board |
| PB | Phantom Brave (movie, gaming) |
| PB | Page Buffer |
| PB | Property Book |
| PB | Probasin |
| PB | Palladium Books (gaming company) |
| PB | Program Baseline |
| PB | Pulsed Beam |
| PB | Pre-Briefed |
| PB | Phonetically Balanced |
| PB | Poor Bugger |
| PB | Pepsi Blue (soft drink) |
| PB | Project-Blue (GMod gaming clan) |
| PB | Poly-Butadiene |
| PB | Pool Bottom |
| PB | Pneumatic Brake |
| PB | Plug Board |
| PB | Publications Bulletin |
| PB | Post Boost |
| PB | Pensions Board |
| PB | Primary Branch |
| PB | Personal Base (station) |
| PB | Product Baseline |
| PB | Pass Balanced (Front Page Sports Football '95 et al) |
| PB | Preppy Boy |
| PB | Probability of Bit Error |
| PB | Plot Bunny (fan fiction) |
| PB | Photon Burst |
| PB | Packet Bus |
| PB | Pulau Bintan (Indonesia) |
| PB | Productive Burp (post surgery) |
| PB | Pax Britannia |
| PB | Probability of Blocking (data transferring) |
| PB | Park Bravo (Turkey) |
| PB | Polar Ball (game) |
| PB | Pharmacopoeia Britannica |
| PB | Phunky Bitch (women's group) |
| PB | Privately Baptised (genealogy) |
| PB | Personal Barometer (domestic water consumption calculation application) |
| PB | Pryidostigmine Bromide |
| PB | Pre-Blackout |
| PB | Perkins Bacon, Ltd. (stamp printers, Great Britain) |
| PB | Predicted and Bi-Directional |
| PB | Physical Inventory, Beginning |
| PB | Prefered Bidder (OJEU tendering process) |
| PB | Pro Baddies (World of Warcraft gaming clan) |