| rub someone the wrong way | | | |
| rub the fear of God into | | | |
| rub up the wrong way | | | |
| ruby slippers | | | |
| ruck up | | | |
| rue the day | | | |
| ruffle someone's feathers | | | |
| rug-cutter | | | |
| rug-cutting | | | |
| rule in | | | |
| rule OK | | | |
| rule out | | | |
| rule the day | | | |
| rule the roost | | | |
| rule the school | | | |
| rumor campaign | | | |
| rumor mill | | | |
| run about | | | |
| run across | | | |
| run afoul of | | | |
| run a mile | | | |
| run amok | | | |
| run and gun | | | |
| run a risk | | | |
| run around | | | |
| runaround | | | |
| run around after | | | |
| run around like a chicken with its head cut off | | | |
| run around with | | | |
| run a temperature | | | |
| run at the mouth | | | |
| run away from | | | |
| run down the clock | | | |
| run for one's life | | | |
| run for one's money | | | |
| run for the hills | | | |
| run for the roses | | | |
| run high | | | |
| run hot and cold | | | |
| run in the family | | | |
| run into a brick wall | | | |
| run into the ground | | | |
| run late | | | |
| runners and riders | | | |
| running target | | | |
| run off | | | |
| run off at the mouth | | | |
| run off with | | | |
| run of play | | | |
| run on | | | |
| run on empty | | | |
| run one's name | | | |
| run on fumes | | | |
| run out | | | |
| run out of steam | | | |
| run out of town | | | |
| run out the clock | | | |
| run over | | | |
| run past | | | |
| run rampant | | | |
| run rings around | | | |
| run riot | | | |
| run scared | | | |
| run someone off their feet | | | |
| run someone ragged | | | |
| run someone's file | | | |
| run something up the flagpole | | | |
| run the clock down | | | |
| run the gamut | | | |
| run the gauntlet | | | |
| run the rule over | | | |
| run the show | | | |
| run through | | | |
| run to | | | |
| run to earth | | | |
| runt of the litter | | | |
| run up | | | |
| run wild | | | |
| run with | | | |
| run with scissors | | | |
| run with the hare and hunt with the hounds | | | |
| rush hour | | | |
| rush in | | | |
| Russian roulette | | | |
| rustle up | | | |