GPB

GPB may refer to:


 * Gazprombank, a Russian bank
 * Georgia Public Broadcasting, the public broadcast network in the American state of Georgia
 * Georgian Public Broadcaster, the national public broadcaster of the nation of Georgia
 * Global power barometer
 * Glossopharyngeal breathing
 * Google Protocol Buffers, a method of serializing structured data
 * GrandPooBear, a video game streamer
 * Granny Peace Brigade, an American peace organizations
 * Gravity Probe B, a satellite-based test of general relativity
 * Guarapuava Airport, in Brazil