RLL may refer to:
*
Run Length Limited, an encoding scheme for disk drives
*
Relay Ladder Logic, a programming language for industrial control
* Radio Local Loop, same as
Wireless Local Loop (WLL)
*
Rahal Letterman Lanigan Racing, an auto racing team in the WeatherTech SportsCar Championship
* ''right lower lobe'', see
List of medical abbreviations: R
{{disambiguation