PRB

PRB may refer to:

Companies and organizations

 * Periodic Review Board
 * Population Reference Bureau
 * Poudreries Réunies de Belgique, former Belgium armaments manufacturer
 * PRB (company), Australian Automotive Manufacturer
 * PRB, French Coatings Company
 * Pre-Raphaelite Brotherhood of artists
 * PRB Sailing Team
 * Polish Business Council (Polska Rada Biznessu in Polish)

Politics

 * Brazilian Republican Party (Partido Republicano Brasileiro, in Portuguese)
 * Parti Rakyat Brunei, former political party in Brunei

Science

 * Retinoblastoma protein, pRb, an important tumour-suppressor gene in retinoblastoma
 * Progesterone receptor B

Other uses

 * Paso Robles Municipal Airport, IATA designation
 * People’s Republic of Bangladesh
 * People's Republic of Benin
 * People's Republic of Bulgaria
 * Permeable reactive barrier, for groundwater remediation
 * Physical Review B, physics journal
 * Powder River Basin, US
 * PRB (vessel)
 * The unofficial ISO 4217 code for the Transnistrian rubla