REN - Ringer Equivalence Number
REST - REpresentational State Transfer
RET - Resolution Enhancement Technology
REXEC - Remote EXECute
REXX - Restructured EXtended eXecutor
RF - Radio Frequency
RFC - Remote Function Call
RFC - Request For Comment
RFE - Request For Enhancement
RFI - Radio Frequency Interference
RFIC - Radio Frequency Integrated Circuit
RFNM - Request For Next Message
RFP - Request For Proposal
RFQ - Request For Quote
RFS - Remote File System
RFT - Revisable Form Text
RFX - Record Field eXchange
RGB - Red, Green, Blue
RGBA - Red, Green, Blue and Alpha
RGM - Resource Group Manager
RGP - Redemption Grace Period
RH - Red Hat
RH - Request Header
RH - Response Header
RHA - Read-Header Area
RHCE - Red Hat Certified Engineer
RHCT - Red Hat Certified Technician
RHEN - Red Hat Enterprise Network
RHN - Red Hat Network
RHS - Regional Holding Company
RI - Reference Implementation
RI - Ring Indicator
RI - Routing Information
RIAA - Record Industry Association of America
RIB - Routing Information Base
RIC - Real-time Interface Co-processor
RID - Relative IDentifier
RIF - Resource Interchange File
RIF - Routing Information Field
RIFF - Resource Interchange File Format
RII - Routing Information Identifier
RILOE - Remote Insight Lights-Out Edition
RILT - Remote Instructor-Led Training
RIM - RDBMS Interface Module
RIM - Registry Information Model
RIM - Request Initialization Mode
RIM - Research In Motion
RIM - Ring Indicator Monitor
RIMM - Rambus® Inline Memory Module
RIO - Reusable Information Object
RIP - Raster Image Processor
RIP - Routing Information Protocol
RIPE - Reseaux Internet Protocol Europeens
RIR - Regional Internet Registry
RIS - Remote Installation Service
RISC - Reduced Instruction Set Computing
RIT - Rochester Institute of Technology
RITA - Regional Information Technology Association
RIX - Riga Internet eXchange
RJ - Registered Jack
RJE - Remote Job Entry
RKM - Routing Key Management
RL - Real Life
RL - Remote Loop
RLC - Radio Link Control
RLDRAM - Reduced Latency Dynamic Random Access Memory
RLDS - Recovery Log Data Set
RLE - Run Length Encoding
RLL - Run Length Limited
RLM - Redundant Link Manager
RLO - Reusable Learning Object
RLOGIN - Remote Login
RLP - Radio Link Protocol
RM - Rate Management
RM - Records Management
RM - Resource Manager
RM3D - Rich Media 3D
RMA - Rate-Monotonic Analysis
RMA - Relocatable Module Area
RMA - Return Material Authorization
RMA - Rights Management Add-on
RMC - Rambus® Memory Controller
RMC - Raptor Management Console
RMC - Resource Monitoring and Control
RMH - Rights-Managed HTML
RMI - Remote Method Invocation
RMII - Reduced Media Independent Interface
RMIT - Royal Melbourne Institute of Technology
RML - Redline Markup Language
RML - Relational Markup Language
RMON - Remote Monitoring
RMPL - Reactive Model-based Programming Language
RMS - Rack Mount Server
RMS - Record Management Services
RMS - Retail Management System
RMS - Rights Management Services
RMS - Root Mean Square
RMT - Reliable Multicast Transport
RNA - Remote Network Access
RNC - Radio Network Controller