- Patrol Boat Rigid , a type of river Patrol Boat used by the US Navy during the Vietnam War
- Plant Breeders' Rights , a Patented Cultivar
- Plastic baton round, a type of non-lethal projectile more commonly known as the Plastic Bullet
- Pabst Blue Ribbon , a brand of Beer
- Pharma Bio-Research , a Dutch drug research company
- Professional Bull Riders , a sport, circuit, and company for professional Bull Riding
- Policy Based Routing
- Packed Bed Reactors , they are also called Plug Flow Reactors ( PFR ) or Pebble Bed Reactors
- Petrobras (), a Brazil ian Oil Company .
- Prespective Based Review , a software inspection style in the descipline of Software Engineering
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