OLB

OLB may stand for:


 * Oh Lord Buddha - Quotes related to Buddhism
 * Olbia - Costa Smeralda Airport, IATA airport code
 * Outside linebacker, a defensive position in American and Canadian football
 * Object Language Bindings (SQL/OLB) - a standard for embedding SQL in Java
 * 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.
 * Operation London Bridge