| rabble rouser | | | |
| raccoon eyes | | | |
| race against time | | | |
| race of truth | | | |
| race out of the traps | | | |
| race queen | | | |
| race riot | | | |
| rack and ruin | | | |
| rack up | | | |
| rafter snapper | | | |
| rag bagger | | | |
| rag the puck | | | |
| rail-thin | | | |
| rainbow baby | | | |
| rainbows and unicorns | | | |
| rain buckets | | | |
| rain cats and dogs | | | |
| rain death | | | |
| rain dogs and cats | | | |
| rain down | | | |
| rain fire and brimstone | | | |
| rain off | | | |
| rain on someone's parade | | | |
| rain or shine | | | |
| rain pitchforks | | | |
| rain stopped play | | | |
| rainy day | | | |
| raise Cain | | | |
| raised by wolves | | | |
| raise eyebrows | | | |
| raise hell | | | |
| raise one's eyebrows | | | |
| raise one's voice | | | |
| raise someone's hackles | | | |
| raise someone's shag | | | |
| raise someone's spirits | | | |
| raise the bar | | | |
| raise the flag and see who salutes | | | |
| raise the line | | | |
| raise the roof | | | |
| raise the spectre | | | |
| raise the stakes | | | |
| raise to the purple | | | |
| rake over | | | |
| rake over the coals | | | |
| rake together | | | |
| rally around | | | |
| rally round | | | |
| rally round the flag | | | |
| ram something down someone's throat | | | |
| rank and file | | | |
| rant and rave | | | |
| rap and rend | | | |
| rap someone's knuckles | | | |
| rare animal | | | |
| Ratatouille moment | | | |
| rat-race | | | |
| rat run | | | |
| rat's nest | | | |
| rattle off | | | |
| rattle through | | | |
| raw deal | | | |
| ray of light | | | |
| razor-sharp | | | |
| razz someone's berries | | | |
| reach-around | | | |
| reach for the sky | | | |
| reach for the stars | | | |
| read between the lines | | | |
| read in | | | |
| read lips | | | |
| read minds | | | |
| read oneself in | | | |
| read out | | | |
| read someone's lips | | | |
| read someone's mind | | | |
| read someone the riot act | | | |
| read someone to filth | | | |
| read the green | | | |
| read the room | | | |
| ready and waiting | | | |
| ready or not | | | |
| ready to roll | | | |
| ready up | | | |
| real deal | | | |
| reality check | | | |
| reality-check | | | |
| reality distortion field | | | |
| real live | | | |
| real McCoy | | | |
| real quick | | | |
| reap the harvest | | | |
| reap the whirlwind | | | |
| reap what one sows | | | |
| rear one's head | | | |
| rearrange the deck chairs on the Titanic | | | |
| reason with | | | |
| rebound relationship | | | |
| reckon without one's host | | | |
| reclaim one's time | | | |