| rack and ruin | | | |
| rafter snapper | | | |
| rag the puck | | | |
| rainbow baby | | | |
| rain buckets | | | |
| rain death | | | |
| rain down | | | |
| rain off | | | |
| rain or shine | | | |
| rain stopped play | | | |
| raise Cain | | | |
| raise eyebrows | | | |
| raise one's eyebrows | | | |
| raise someone's hackles | | | |
| raise someone's spirits | | | |
| raise the flag and see who salutes | | | |
| raise the roof | | | |
| raise the stakes | | | |
| rake over | | | |
| rake together | | | |
| rally round | | | |
| ram something down someone's throat | | | |
| rant and rave | | | |
| rap someone's knuckles | | | |
| Ratatouille moment | | | |
| rat run | | | |
| rattle off | | | |
| raw deal | | | |
| razor-sharp | | | |
| reach-around | | | |
| reach for the stars | | | |
| read in | | | |
| read minds | | | |
| read out | | | |
| read someone's mind | | | |
| read someone to filth | | | |
| read the room | | | |
| ready or not | | | |
| ready up | | | |
| reality check | | | |
| reality distortion field | | | |
| real McCoy | | | |
| reap the harvest | | | |
| reap what one sows | | | |
| rearrange the deck chairs on the Titanic | | | |
| rebound relationship | | | |
| reclaim one's time | | | |
| Red Baron | | | |
| redeem oneself | | | |
| red flag | | | |
| red ink | | | |
| red letter day | | | |
| red meat | | | |
| red tape | | | |
| reel in | | | |
| reflect upon | | | |
| refrigerator mom | | | |
| reheat someone's nachos | | | |
| reinvent the wheel | | | |
| remain to be seen | | | |
| rend one's garments | | | |
| reopen old wounds | | | |
| rest assured | | | |
| rest his soul | | | |
| rest on one's laurels | | | |
| returns to scale | | | |
| return to form | | | |
| reverse course | | | |
| revolve around | | | |
| rev up | | | |
| rhyme or reason | | | |
| Richard Roe | | | |
| rickle o' banes | | | |
| riddle me that, Batman | | | |
| ride down | | | |
| ride herd on | | | |
| ride off into the sunset | | | |
| ride one's bumper | | | |
| ride on the back of | | | |
| ride roughshod over | | | |
| ride tall in the saddle | | | |
| ride the crest of the wave | | | |
| ride the rails | | | |
| ride the tiger | | | |
| rid out | | | |
| right away | | | |
| right on | | | |
| ring a bell | | | |
| ring down the curtain | | | |
| ring hollow | | | |
| ring one's bell | | | |
| ring someone's bell | | | |
| ring up | | | |
| ripen up | | | |
| rip into | | | |
| rip off the bandage | | | |
| rip-snorting mad | | | |
| rip to shreds | | | |
| rise from the ashes | | | |
| rise to the occasion | | | |