| R | Are | |
| R&R | Rest And Relaxation | |
| R/T | Real Time | |
| RAK | Random Act Of Kindness | |
| RBAY | Right Back At You | |
| RBTL | Read Between The Lines | |
| RDNK | Redneck | |
| RESQ | Rescue | |
| RFC | Request For Comment | |
| RGDS | Regards | |
| RHIP | Rank Has Its Privileges | |
| RL | Real Life | |
| RLF | Real Life Friend | |
| RM | Room | |
| RML | Read My Lips | |
| RMLB | Read My Lips Baby | |
| RMMM | Read My Mail Man | |
| ROF | Rolling On The Floor | |
| ROFL | Rolling On The Floor Laughing | |
| ROFLMBO | Rolling On Floor, Laughing My Behind Off | |
| ROFLOL | Rolling On The Floor Laughing Out Loud | |
| ROTF | Rolling On The Floor | |
| ROTFL | Rolling On The Floor Laughing | |
| ROTFLMBO | Rolling On The Floor, Laughing My Behind Off | |
| ROTFLOL | Rolling On The Floor Laughing Out Loud | |
| RP | Role Play | |
| RPG | Role Playing Game(s) | |
| RSN | Real Soon Now | |
| RT | Real-Time | |
| RTBS | Reason To Be Single | |
| RTFA | Read The Freaking Article | |
| RTFFAQ | Read The Freaking FAQ | |
| RTFM | Read The Freaking Manual | |
| RTFMM | Read The Freaking Manual, Moron | |
| RTFS | Read The Freaking Source | |
| RU | Are You? | |
| RUB | Are You Back | |
| RUCMNG | Are Your Coming? | |
| RUMORF | Are You Male Or Female? | |
| RUOK | Are You Ok | |
| RUUP4IT | Are You Up For It? | |
| RW | Real World | |
| RX | Prescription | |
| RX | Regards | |
| (-: to the Emoticons :-) |
