| radio broadcasting companies | radio broadcasting stations | radio communication equipment |
| radio repair | radio services | radio stations |
| radiotelephone communication | railroads | ready mixed concrete |
| real estate | real estate agents | real estate attorney |
| real estate investment trusts | real estate manager | real estate school |
| real property lessors | recreation | recreation clubs |
| recreation goods | rectal surgeons | refiners |
| refractory | refractory materials | refrigeration equipment |
| refrigeration repair | refrigeration services | refrigeration supply |
| refuse systems | regulation | regulation of agricultural marketing |
| related devices | related material | related products |
| related products manufacturers | religious organizations | repair service |
| residential care | residential construction | restaurant |
| restaurant consultants | restaurant cuisines | restaurant equipment |
| restaurant equipment repair | restaurant equipment supply | restaurant supply |
| retail bakeries | retail nurseries | reupholstery repair |
| rivets | rivets manufacturers | roller bearing |
| roofing | roofing contractors | roofing equipment |
| roofing supply | rubber-synthetic | rubber-synthetic manufacturers |
| rug cleaners | rug dealers | rug dealers new |
| rural bus transportation | russian restaurant |
