3R

3R may refer to :
* 3R (Reduce, Reuse, Recycle), a hierarchy of waste management strategies to minimize waste
* 3R (Respect, Relax, Respond), a 2004 Filipino television program
* 3R's (The three 3Rs), a phrase sometimes used to describe the foundations of a basic skills oriented education program within schools
* Intelsat 3R, a former communications satellite
* Yaesu VX-3R an ultra-compact dual band amateur radio transceiver