RR or rr may refer to:
R.R. Donnelley is an American Fortune 500 integrated communications company that provides marketing and business communications, commercial printing, and related services.
RRS Discovery is a barque-rigged auxiliary steamship built for Antarctic research, and launched in 1901. She was the last traditional wooden three-masted ship to be built in the United Kingdom.
RRS Sir David Attenborough is a research vessel owned by the Natural Environment Research Council, to be operated by the British Antarctic Survey for the purposes of both research and logistic support.
RRR is an upcoming Indian period action film film scripted and directed by S. S. Rajamouli. It stars N. T.
RRDtool (round-robin database tool) aims to handle time series data such as network bandwidth, temperatures or CPU load.
Rron Broja (born 9 April 1996) is a Kosovo Albanian professional footballer who plays as a defensive midfielder for Macedonian club Shkupi.
RR Auction is an auction house headquartered in Boston's North End with a production office based in Amherst, New Hampshire.