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