| rally around |
| rank and file |
| rare animal |
| rat's nest |
| ray of light |
| reach for the sky |
| read lips |
| read someone's lips |
| read the green |
| ready to roll |
| reality-check |
| real quick |
| rear one's head |
| reckon without one's host |
| red-diaper |
| red-handed |
| red light |
| reduce someone to tears |
| refresh someone's memory |
| reign supreme |
| render unto Caesar |
| reset the dial |
| rest one's soul |
| return the favor |
| reverse Midas touch |
| rhyme off |
| rich bitch |
| riddle wrapped in an enigma |
| ride high |
| ride one's luck |
| ride shotgun |
| ride the pine |
| ride the wave |
| right of Genghis Khan |
| ringbarked |
| ring off the hook |
| ring true |
| ripe old age |
| rip off the band-aid |
| rise and shine |
| rise to the purple |
| roach coach |
| road to Damascus |
| rob Peter to pay Paul |
| rocket scientist |
| rocking-horse shit |
| rod for one's back |
| roguey |
| rolling in it |
| roll off the tongue |
| roll out the red carpet |
| roll up one's sleeves |
| Rome wasn't built in a day |
| root around |
| rose-colored glasses |
| rot in hell |
| rough around the edges |
| rough patch |
| round of applause |
| roving eye |
| royal bumps |
| rub down |
| rub off |
| rub salt in the wound |
| rub up the wrong way |
| ruffle someone's feathers |
| rule OK |
| rule the school |
| run across |
| run and gun |
| run around after |
| run at the mouth |
| run for one's money |
| run hot and cold |
| run late |
| run off at the mouth |
| run on empty |
| run out of steam |
| run past |
| run scared |
| run something up the flagpole |
| run the rule over |
| run to earth |
| run with |
| rush in |