| radio broadcasting companies | radio broadcasting stations | radio communication equipment |
| radio repair | radio services | radio stations |
| radiotelephone communication | railroads | railroad transportation |
| ready manufacturers | ready mixed concrete | ready mixed concrete manufacturers |
| real estate | real estate agents | real estate attorney |
| real estate investment trusts | real estate manager | real estate school |
| real property lessors | record manufacturers | recreation |
| recreational camps | recreational vehicle dealers | recreation clubs |
| recreation goods | rectal surgeons | refractory |
| refrigerated storage | refrigerated warehousing | refrigeration equipment |
| refrigeration repair | refrigeration services | refrigeration supply |
| refuse systems | regulation | regulation of agricultural marketing |
| related devices | related material | related products |
| relays controls | religious organizations | repair service |
| residential care | residential construction | residential lighting fixtures |
| restaurant | restaurant architects | restaurant consultants |
| restaurant cuisines | restaurant equipment | restaurant equipment supply |
| restaurant supply | retail bakeries | retail nurseries |
| reupholstery repair | rivets | roasted coffee |
| roller bearing | roofing | roofing contractors |
| roofing equipment | roofing supply | rug cleaners |
| rug dealers | rug dealers new | rural bus transportation |
| russian restaurant |
