RLL may refer to:
*
Run Length Limited
Run-length limited (RLL) is a line coding technique that is used to send arbitrary data over a communications channel with bandwidth limits. RLL codes are defined by four main parameters: ''m'', ''n'', ''d'', ''k''. The first two, ''m''/''n'', r ...
, 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
Rahal Letterman Lanigan Racing (RLL) is an auto racing team that has participated in the WeatherTech SportsCar Championship and the IndyCar Series. Headquartered in Zionsville, Indiana and Hilliard, Ohio, it is co-owned by 1986 Indianapolis 50 ...
, an auto racing team in the WeatherTech SportsCar Championship
* ''right lower lobe'', see
List of medical abbreviations: R
{{disambiguation