4R
# 4R

4R may refer to:

* 4R Family restaurants in Northern California
* Galaxy 4R, a Panamsat-owned communications satellite
* Ponceau 4R, a synthetic colourant
* Hamburg International airline's IATA code
* Nachtjagdgeschwader 2, from its historic Geschwaderkennung code with the Luftwaffe in World War II
* Sri Lanka aircraft registration
* A standard consumer print size for photographs. See Standard photographic print sizes
* the Railroad Revitalization and Regulatory Reform Act, also known as the "4R Act"
* the short-lived acronym for Neljä ruusua ('Four Roses'), a Finnish band, aiming for a broader international appeal
* 4R, the production code for the 1977 Doctor Who serial The Robots of Death
