3R

3R or three Rs may refer to:

The three Rs, 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 when consumer guarantees of goods are not satisfied: refund, replace, and repair
The three Rs (animal research), principles for ethical use of animals in testing: replacement, reduction, refinement
Ronaldo, Rivaldo, and Ronaldinho, 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
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, a former communications satellite
Yaesu VX-3R, an ultra-compact dual-band amateur radio transceiver
British Rail Class 206, 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, rebel group in Central African Republic
Relief, recovery, and reform, categories of program under the New Deal

See also