RR

• Fury from the Deep
• ITU Radio Regulations
• Jackson Rhoads
• R (New York City Subway service)
• R (disambiguation)
• R&R (disambiguation)
• RR (film)
• RR interval
• RRR (disambiguation)
• RRRR (disambiguation)
• Railroad
• Railroad Retirement Board
• Rajasthan Royals
• Ranchi Rhinos
• Randy Rhoads
• Rapid Refresh
• Raritan River Railroad
• Rashtriya Rifles
• Rear-engine, rear-wheel-drive layout
• Recoilless rifle
• Rekords Rekords
• Resource record
• Respiratory rate
• Revised Romanization of Hangeul
• Revised Romanization of Korean
• Rh factor
• Rhodesia Regiment
• Richard Rohac
• Risk ratio
• Rolls-Royce (disambiguation)
• Rolls-Royce plc
• Roraima
• Round-robin scheduling
• Roundup Ready
• Royal Air Force
• Ruff Ryders Entertainment
• Run rate
• Scipione Riva-Rocci
• county roads in Ontario
• rr (debugging)
• rr (digraph)