ARRB may refer to:

• Australian Road Research Board, a research organisation studying Australia's roads
• President John F. Kennedy Assassination Records Collection Act of 1992#Assassination Records Review Board

• Promotion of Grand Theft Auto IV
• Promotion of same-sex relationship
• Promotion to the 2nd Bundesliga (Football)
• Promotion to the Bayernliga
• Promotion to the Bundesliga
• Promotion to the Fussball-Bundesliga
• Promotion to the Oberliga Bayern
• Promotor (biology)
• Pro Motorsport (Italian racing team)
• Promotus Advertising
• Promotus advertising
• Promoucae
• Promoucaes
• Promoxolane
• Prompsat
• PROMPT
• Prompt Corrective Action
• Prompt Corrective Action Law
• Prompt (disambiguation)
• Prompt Global Strike
• Prompt global strike
• Prompt neutrons
• Prompton (disambiguation)
• Prompt payment discount
• Prom Queen (disambiguation)