Template:For Template:Sister project RR, Rr or rr may refer to:
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Arts and entertainmentEdit
- RR (film), a 2007 experimental film by James Benning
- Red Ribbon Army, a fictional army in the Dragon Ball series
- Ruff Ryders Entertainment, a record label and East Coast rap collective
- Fury from the Deep (production code: RR), a 1968 Doctor Who serial
- RR (EP), a 2023 collaborative EP by Rosalía and Rauw Alejandro
- RR, prefix for models of Jackson Rhoads electric guitars commissioned by guitarist Randy Rhoads
Businesses and organizationsEdit
- Rashtriya Rifles, an Indian counter-insurgency force
- Rational Recovery, an addiction recovery program
- Rekords Rekords (logo), an American record label
- Rhodesia Regiment, Rhodesian Army unit
- Royal Air Force (IATA airline designator)
- Richard Rohac (logo), an Austrian art metal firm
LanguageEdit
- rr (digraph)
- Revised Romanization of Korean, the official Korean language romanization system in South Korea
- Revised Romanization of Hangeul, the former official Hangeul language romanization system in South Korea
Science and technologyEdit
- ITU Radio Regulations
- Rapid Refresh (weather prediction), a short-range numerical weather prediction model
- Rear-engine, rear-wheel-drive layout, in automotive design
- Recoilless rifle
Biology and medicineEdit
- RR, an Rh factor phenotype
- "RR", a blood pressure measurement taken with a sphygmomanometer invented by Scipione Riva-Rocci
- RR interval (R wave to R wave interval), the inverse of heart rate
- Risk ratio, or relative risk, in statistics and epidemiology
- Respiratory rate, a vital sign
- Roundup Ready, Monsanto line of genetically modified crop seeds
ComputingEdit
- Resource record, in the Domain Name System
- Round-robin scheduling, an algorithm for coordinating processes in an operating system
- Route reflector, a Border Gateway Protocol configuration
- rr (debugging), a record and replay debugger for userspace Linux programs
- Resurrection Remix OS, a custom Android ROM created by Altan KRK and Varun Date
SportsEdit
- Rajasthan Royals, an Indian Premier League franchise
- Ranchi Rhinos, a defunct Hockey India League franchise
- Run rate, an average number of runs a batsman (or the batting side) scores in an over of 6 balls in cricket
TransportationEdit
- Raritan River Railroad (reporting mark: RR)
- Buzz (Ryanair) (IATA code: RR), a Polish airline subsidiary of Ryanair Holdings
- Regional Road, a class of road in Ontario
- Rhodesia Railways, former Zimbabwean railway company
- Rhymney Railway, former British railway company
- Rolls-Royce Holdings (LSE code and logo)
- Rolls-Royce, several companies
- RR, a predecessor of the R (New York City Subway service)
See alsoEdit
- Roraima (ISO 3166 code: BR-RR), a state in Brazil
- Railroad Retirement Board (RRB), retirement benefits railroad workers
- R&R (disambiguation)
- R (disambiguation)
- RRR (disambiguation)
- RRRR (disambiguation)