PLB (disambiguation)

PLB or Personal Locator Beacon is a type of distress radiobeacon.

PLB may also refer to:
 * Physics Letters B, a scientific journal covering nuclear physics, Particle physics, and astrophysics.
 * Processor Local Bus, a bus used for IBM's PowerPC processors
 * Programming Language for Business
 * Public light bus, a form of public transport in Hong Kong
 * Pursed lip breathing, a breathing technique used in medicine
 * Premier League of Belize the highest competitive football league in Belize
 * Clinton County Airport's IATA code
 * Phospholipase B
 * Phospholamban