OLB

OLB may stand for:

  • Olbia - Costa Smeralda Airport, IATA airport code
  • Outside linebacker - a defensive position in American football and Canadian football
  • Object Language Bindings - in computing
  • Oldenburgische Landesbank - a German bank
  • Online Bible
  • Overpass Light Brigade - Series of illuminated (LED) signs used by activists and others. Each letter is held by a different person.