| radio broadcasting companies | radio broadcasting stations | radio communication equipment |
| radio repair | radio services | radio stations |
| radiotelephone communication | railroad equipment | railroad equipment manufacturers |
| railroads | railroad transportation | ravioli manufacturers |
| ready mixed concrete | real estate | real estate agents |
| real estate attorney | real estate investment trusts | real estate manager |
| real estate school | real property lessors | record manufacturers |
| record tape stores | recreation | recreational camps |
| recreational vehicle dealers | recreation clubs | recreation goods |
| rectal surgeons | refiners | refiners precious metals |
| 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 | related products manufacturers | related work |
| religious organizations | religious trust | repair service |
| residential care | residential construction | residential lighting fixtures |
| restaurant | restaurant architects | restaurant consultants |
| restaurant cuisines | restaurant equipment | restaurant equipment manufacturers |
| restaurant equipment supply | restaurant supplies manufacturers | restaurant supply |
| retail bakeries | retail nurseries | reupholstery repair |
| rice | rivets | roasted coffee |
| roaster chickens | roofing | roofing contractors |
| roofing supply | rubber-synthetic | rubber-synthetic manufacturers |
| rug cleaners | rug dealers | rug dealers new |
| rural bus transportation | russian restaurant |
