RR

• Buzz (Ryanair)
• Fury from the Deep
• ITU Radio Regulations
• Jackson Rhoads
• R (New York City Subway service)
• R (disambiguation)
• RR (EP)
• RR (film)
• RR interval
• RRR (disambiguation)
• RRRR (disambiguation)
• Railroad Retirement Board
• Rajasthan Royals
• Ranchi Rhinos
• Rapid Refresh (weather prediction)
• Raritan River Railroad
• Rashtriya Rifles
• Rational Recovery
• Rear-engine, rear-wheel-drive layout
• Recoilless rifle
• Red Ribbon Army
• Rekords Rekords
• Resource record
• Respiratory rate
• Resurrection Remix OS
• Revised Romanization of Korean
• Rh factor
• Rhodesia Railways
• Rhodesia Regiment
• Rhymney Railway
• Richard Rohac
• Richmond Raceway
• Risk ratio
• Rolls-Royce
• Rolls-Royce Holdings
• Roraima
• Round-robin scheduling
• Roundup Ready
• Route reflector
• Royal Air Force
• Ruff Ryders Entertainment
• Run rate
• Scipione Riva-Rocci