| record book | | | |
| Red Baron | | | |
| red-diaper | | | |
| redeem oneself | | | |
| red face test | | | |
| red flag | | | |
| red-handed | | | |
| red ink | | | |
| rediscover fire | | | |
| red letter day | | | |
| red light | | | |
| red meat | | | |
| red rider | | | |
| red tape | | | |
| reduce someone to tears | | | |
| reel in | | | |
| reel off | | | |
| reflect upon | | | |
| refresh someone's memory | | | |
| refrigerator mom | | | |
| refrigerator mother | | | |
| reheat someone's nachos | | | |
| reign supreme | | | |
| reinvent the wheel | | | |
| release the kraken | | | |
| remain to be seen | | | |
| render unto Caesar | | | |
| rend one's garments | | | |
| rent out | | | |
| reopen old wounds | | | |
| reset the dial | | | |
| rest assured | | | |
| rest easy | | | |
| rest his soul | | | |
| rest one's soul | | | |
| rest on one's laurels | | | |
| retrace one's steps | | | |
| returns to scale | | | |
| return the favor | | | |
| return to form | | | |
| return to one's muttons | | | |
| reverse course | | | |
| reverse Midas touch | | | |
| revolve around | | | |
| revolving door syndrome | | | |
| rev up | | | |
| rhyme off | | | |
| rhyme or reason | | | |
| rice chaser | | | |
| Richard Roe | | | |
| rich bitch | | | |
| rickle o' banes | | | |
| ridden hard and put away wet | | | |
| riddle me that, Batman | | | |
| riddle wrapped in an enigma | | | |
| ride down | | | |
| ride hard and put away wet | | | |
| ride herd on | | | |
| ride high | | | |
| ride off into the sunset | | | |
| ride on a rail | | | |
| ride one's bumper | | | |
| ride one's luck | | | |
| ride on the back of | | | |
| ride out | | | |
| ride roughshod over | | | |
| ride shotgun | | | |
| ride tall in the saddle | | | |
| ride the coattails | | | |
| ride the crest of the wave | | | |
| ride the pine | | | |
| ride the rails | | | |
| ride the short bus | | | |
| ride the tiger | | | |
| ride the wave | | | |
| rid out | | | |
| rid up | | | |
| right away | | | |
| right of Genghis Khan | | | |
| right on | | | |
| rig out | | | |
| ring a bell | | | |
| ringbarked | | | |
| ring down the curtain | | | |
| ring false | | | |
| ring hollow | | | |
| ring off the hook | | | |
| ring one's bell | | | |
| ringside seat | | | |
| ring someone's bell | | | |
| ring true | | | |
| ring up | | | |
| ring up the curtain | | | |
| ripen up | | | |
| ripe old age | | | |
| rip into | | | |
| rip it up | | | |
| rip off the bandage | | | |
| rip off the band-aid | | | |
| rip-snorting mad | | | |