3R or three Rs may refer to: *

The three Rs The three Rs are three basic skills taught in schools: reading, writing and arithmetic", Reading, wRiting, and aRithmetic or Reckoning. The phrase appears to have been coined at the beginning of the 19th century. Origin and meaning The skills the ...

, the basic elements of a primary school curriculum: ''reading, 'riting (writing), and 'rithmetic (arithmetic)'' * The three Rs, the waste management hierarchy: ''reduce, reuse, and recycle'' * The three Rs, consumer remedies under

Australian Consumer Law The Australian Consumer Law (ACL), beinto the ''Competition and Consumer Act 2010'', is uniform legislation for consumer protection, applying as a law of the Commonwealth of Australia and is incorporated into the law of each of Australia's state ...

when consumer guarantees of goods are not satisfied: ''refund, replace, and repair'' * The

three Rs (animal research) The Three Rs (3Rs) are guiding principles for more ethical use of animals in product testing and scientific research. They were first described by W. M. S. Russell and R. L. Burch in 1959.Russell, W.M.S. and Burch, R.L., (1959). ''The Princip ...

, principles for ethical use of animals in testing: replacement, reduction, refinement * Ronaldo,

Rivaldo Rivaldo Vítor Borba Ferreira (; born 19 April 1972), known simply as Rivaldo, is a Brazilian former footballer who played mainly as an attacking midfielder but also as a second striker, and on occasion deployed as a wide midfielder or as ...

, and

Ronaldinho Ronaldo de Assis Moreira (born 21 March 1980), commonly known as Ronaldinho Gaúcho () or simply Ronaldinho, is a Brazilian former professional Association football, footballer who played as an attacking midfielder or left winger. Widely reg ...

, dubbed "The three Rs", the main attacking trio of Brazil at the 2002 FIFA World Cup * ''The 3Rs'', an experimental short film by

David Lynch David Keith Lynch (January 20, 1946 – January 16, 2025) was an American filmmaker, visual artist, musician, and actor. Widely considered one of the greatest filmmakers of all time, Lynch was often called a "visionary" and received acclaim f ...

* 3R Computers, Inc., a defunct American computer company based in Massachusetts * 3R (optical regenerator), an optical communications repeater that performs reamplification, reshaping, and retiming *

Intelsat 3R Intelsat 3R (formerly PAS-3R) is a communications satellite serving the Americas market. It is owned by Intelsat and located at 43° West longitude. Satellite description Hughes Aircraft Corporation constructed the satellite based on the HS ...

, a former communications satellite *

Yaesu VX-3R The Yaesu VX series is a line of two sequences of compact amateur radio handheld transceivers produced by Yaesu. There is a line of ultra-compact lower-power dual-band (2 m and 70 cm) transceivers that started with the VX-1R and was la ...

, an ultra-compact dual-band amateur radio transceiver *

British Rail Class 206 The British Rail Class 206 or 3R was a type of Diesel-electric multiple unit (DEMU), introduced in 1964. They were not 'built' as such but rather re-formed from Class 201 and EPB vehicles for use on -- (North Downs Line) services. Six three-ca ...

, Southern Region designation 3R from 3-car Reading Line stock * 3R (print size), a standard consumer print size for photographs * The 3Rs of Junior Forest Wardens (a Canadian outdoor-education program for families): Responsibility to yourself, Responsibility to others, Responsibility to your community and the planet *

Return, Reclamation, Rehabilitation Return, Reclamation, Rehabilitation (abbreviated 3R, ) is a rebel group in the northwestern part of Central African Republic. The group was formed in December 2015 to protect Fulani herders from Anti-balaka militia attacks.Amnesty InternationalCE ...

, rebel group in Central African Republic * Relief, recovery, and reform, categories of program under the New Deal

See also