R6

R6 or R-6 may be:

* R6 assault rifle, a South African shortened version of the R4
* R6 battery, a carbon-zinc battery in the AA size. See List of battery sizes
* R6 implant, in Scientology doctrine
* R6 (New York City Subway car), a model of New York City Subway rolling stock manufactured from 1935 to 1936
* R6 (SEPTA), a SEPTA Regional Rail line in Philadelphia, Pennsylvania
* , a risk phrase in chemistry
* Caudron R.6, a French reconnaissance aircraft of World War I
* Expressway R6, a road in Czech Republic
* Motorroad R6 (Slovakia)
* Tupolev R-6, a Soviet multi- role reconnaissance fighter
* USS R-6 (SS-83), a 1919 R-class coastal and harbor defense submarine of the United States Navy
* Yamaha YZF-R6, a 600cc Yamaha supersport-class motorcycle
* Air Srpska IATA code "defunct"
* Rainbow Six, a Tom Clancy video game series and book, is sometimes abbreviated as R6
* RACSA IATA code
* An abbreviation for DVD region code 6

R06 may refer to :
* HMS Illustrious (R06), a 1976 Invincible-class British Royal Navy light aircraft carrier