R&D Research and development

R/W Read/Write

RAB Random Access Backup

RADAR Radio Detection And Ranging

RAEBNC Read And Enjoy, But No Comment
RAEBNC Read And Enjoyed, But No Comment

RAEW Responsibility, Authority, Expertise and Work

RAF Royal Air Force

RAFO Research & Find Out

RAID Redundant Arrays of Inexpensive Disks

RAK Random Act of Kindness

RAOFLMAO Rolling Around On the Floor Laughing My Arse Off!

RAS Remote Access Service

RATM Rage Against the Machine

RAV Recreational Active Vehicle

RBAC Role based access control

RBAY Right Back At Ya
RBAY Right Back At You

RBL Raltime Blackhole List

RBS Really Big Screen

RBY Red, Blue, Yellow

RC Release Candidate
RC Remote control
RC Roman Catholic

RCG Recent college graduate
RCG Reverse Cow Girl

RDB Relational DataBase

RDBMS Relational Database Management System

RDF Resource Description Format
RDF Resource Description Framework

RDP Reliable Datagram Protocol

RDS Radio Data System

RDWHAHB Relax, Don't Worry, Have A Home Brew

RE Hello Again

REJ Rapid Economic Justification

REM Rapid Eye Movement

REXMAN Relax And Enjoy, and read the MANual

RFC Request For Comments

RFD Request for discussion

RFI Request For Information

RFICS Radio Frequency Integrated Circuits

RFL? Ready For Lunch?

RFP Request for proposal

RFQ Requests for quotation

RFRB Run Fast Run Beautiful

RFS Ready For Service
RFS Refuse

RFT Request For Thinking

RFV Real File Viewer
RFV Request for volunteers

RHIP Rank Has Its Privileges

RHPS Rocky Horror Picture Show

RHRN Right here right now!

RI Romantic interest

RIA Rich Internet Application

RIAA Recording Industry Association of America

RIC Racial Indentity Crisis

RIF Reduction In Force

RISC Reduced Instruction Chip Set

RISL Reduced instruction set language

RKBA Right to Keep & Bear Arms

RL Real Life

RLCO Real Life COnference

RLF Real life friend

RMB Right Mouse Button
RMB Ring My Bell

RME Rolling My Eyes

RML Read My Lips
RMLB Read My Lips Baby

RMW Read, Modify, Write

RMX Reverse mail exchange

RNA RiboNucleic Acid
RNA Ring No Answer

ROCE Return On Capital Employed

ROFFNAR Rolling On the Floor For No Apparent Reason

ROFL Rolling on the Floor, Laughing
ROFLAHMS Rolling on the Floor Laughing and Holding my Side
ROFLAHMSL Rolling On the Floor Laughing And Holding My Sides Laughing
ROFLAO Rolling On Floor Laughing Ass Off
ROFLAPMP ROFL And Peeing My Pants
ROFLASC Rolling On the Floor Laughing And Scaring the Cat
ROFLGO Rolling On Floor Laughing Guts Out!
ROFLKAS Rolling On Floor Laughing, Kicking And Screaming
ROFLMAO Rolling on the floor, laughing my A off
ROFLMAOBT Rolling On Floor Laughing My Arse Off Big Time
ROFLMAOOL Rolling On the Floor Laughing My Ass Off Out Loud
ROFLMAOPIMP Rolling on floor,laughing my ass off, pissing in my pants
ROFLMAOPMP Rolling On Floor Laughing My Arse Off Peeing My Pants
ROFLMAOWTIME ROFLMAO With Tears In My Eyes
ROFLMHO Rolling On Floor Laughing My Head Off
ROFLMYAO Rolling on the floor Laughing my arse off
ROFLOL Rolling On Floor Laughing Out Loud
ROFLOLVH Rolling On the Floor Laughing Out Loud Very Hard
ROFLPIP Rolling on the floor laughing, wetting my pants
ROFLUTS ROFL Unable To Speak
ROFLUTS Rolling On Floor Laughing Unable to Speak
ROFLWPIMP Rolling On Floor Laughing Whilst Peeing In My Pants

ROFPML Roll On Floor Pissing Myself Laughing

ROFTTPOF Rolling On the Floor Trying To Put Out Flames

ROFUTS Rolling On Floor Unable To Speak

ROFWL Roll on floor with laughter

ROGLMAO Rolling on ground laughing my ass off

ROGLOL Rolling On The Ground Laughing Out Loud

ROI Return on assets invested

ROIO Recording Of Iffy Origin
ROIO Recording Of Illegal Origin

ROLAP Relational On-Line Analytical Processing

ROLFLUTS Rolling on the floor laughing, unable to speak

ROLFMCO Rolling On floor Laughing My Clothes Off

ROLMAO Rolling Over Laughing My Ass Off

ROM Read Only Memory

ROMA Right Outta My Ass

ROMEOS Retired Old Men Eating Out

ROMI Return on Management Investment

ROPC Running Optimum Power Calibration

ROR Rate Of Return
ROR Risk Of Ruin

rot Rule Of Thumb

ROTBA Reality On The Blink Again
ROTBA Reality on the blink again?

ROTC Reserve Officers Training Corps

ROTF Rolling on the floor
ROTFHMS Rolling On The Floor Holding My Stomach
ROTFLAHMS Rolling On The Floor Laughing And Holding My Side
rotflao Rolling on the floor laughing <my> ass off
ROTFLAS Rolling On The Floor Laughing And Snorting
ROTFLBTC Rolling On The Floor Laughing and Biting The Carpet
ROTFLMAAOBPO Rolling On The Floor Laughing My Ass And Other Body Parts Off
ROTFLMAOTID Rolling On The Floor Laughing My Ass Off Till I Die
ROTFLMAOWPIMP Rolling on the floor laughing my arse off while peeing in my pants
ROTFLMTO Rolling On The Floor Laughing My Tail Off
ROTFLOL Rolling On the Floor Laughing Out Loud
ROTFLSHISMC Rolling On The Floor Laughing So Hard I Spilt My Coffee
ROTFLSTC Rolling On The Floor Laughing Scaring The Cat
ROTFLTIC Rolling On The Floor Laughing Till I Cry
ROTFLUTS Rolling On The Floor Laughing Unable to Speak
ROTFLWTIME Rolling On The Floor Laughing With Tears In My Eyes
ROTFPIMP Rolling On The Floor Peeing In My Pants
ROTFPMFL Rolling on the floor pissing my self laughing
ROTFPML Rolling on the floor pissing myself laughing
ROTFPMPL Rolling on the floor pissing my pants laughing
ROTFSTCLMAAOBPO Rolling On The Floor Scaring The Cat Laughing My Ass And Other Body Parts Off
ROTFUTS Rolling on the floor, Unable to speak
ROTGCMSLMAO Rolling on the ground clutching my sides laughing my ass off
ROTGLMAO Rolling on the ground laughing my arse off

ROYGBIV Red Orange Yellow Green Blue Indigo Violet

RP Retail Price
RP Role play
RP Romantic Partner

RPC Remote procedure call

RPG Report Program Generator
RPG Rocket Propelled Grenade
RPG Role playing Games

RPM Revolutions Per Minute
RPM Rotations Per Minute

RPMU Revenue per 1000 uniques

RPs Revolutions Per Second

RPV Remotely Piloted Vehicle

RQL Are cool

RRFABL Red Roses for a Blue Lady

RROF Request for Release of Funds

RRP Recomended Retail Price

RRR Rabid Religious Right
RRR Release Readiness Review

RSI Repetitive Strain Injury

RSLE Remote Line Subscriber Equipment

RSPCA Royal Society for the Prevention of Cruelty to Animals

RSS Really Simple Syndication
RSS Rich Site Summary

RSVP Respond after receiving

RT Radio telephone
RT Real time
RT Return

RTA Ready to assemble

RTB Return To Base

RTD Ready To Drink

RTDM Read The Damn Manual !

RTF Read the FAQ
RTF Rich text format

RTI Real Time Interruption

RTID Real Time Identification

RTK Return To Keyboard

RTLS Real-time Location system

RTLW Rangers lead the way

RTMF Read the manual first

RTOL Real-time on line

RTOS Realtime Operating system

RTR Ready To Roll

RTS Read the screen
RTS Ready to Send
RTS Real Time Strategy

RTSM Read The Stupid Manual

RTT Round trip time

RTTTL Ring tones text transfer language

RTV Return to Vendor

RTW Return To Work

RUC Rapid Update Cycle
RUC Road User Charge

RUIM Removable user identiy module

RUJ Are You Jealous

RUM Are You Married

RUMORF Are You Male Or Female

RUP Restricted Use Pesticide

RUS Are You Single

RUT Are you there?

RUUP4IT Are you up for it

RVD Remote Virtual Disk

RW Real World
RW Real World

RWBIAD Rome wasn't built in a day

RWD Rear Wheel Drive

RYO Roll Your Own
RYO Roll your own

RYS Read Your Screen