| 1533 | Rabbit food, manufacturing | |
| 0122 | Rabbit production | |
| 0122 | Rabbit raising | |
| 1511 | Rabbits processing (i.e., fresh, frozen, canned or cooked) | |
| 1511 | Rabbits, slaughtering and dressing | |
| 9241 | Race car drivers and owners | |
| 3410 | Race cars, manufacturing | |
| 3410 | Race cars, rolling chassis, manufacturing | |
| 9241 | Race horse trainers | |
| 9241 | Race horse training | |
| 0121 | Race horses, raising | |
| 9241 | Race teams, independent | |
| 9241 | Race track operation (e.g., horse, dog, auto) | |
| 2219 | Race track programs, publisher | |
| 2219 | Race track programs, publishing | |
| 2211 | Race track programs, publishing and printing combined | |
| 2913 | Races, ball or roller bearing, manufacturing | |
| 3190 | Raceways, manufacturing | |
| 2221 | Racing forms, printing without publishing | |
| 2219 | Racing forms, publishing | |
| 2211 | Racing forms, publishing and printing combined | |
| 2211 | Racing forms, publishing and printing, or publishing only | |
| 9241 | Racing stables, horse, operation of | |
| 3120 | Rack and panel connectors, manufacturing | |
| 3430 | Rack and pinion steering assemblies, manufacturing | |
| 3430 | Rack and pinion steering assemblies, rebuilding on factory basis | |
| 3693 | Rackets and frames, sports (e.g., tennis, badminton, squash, racketball, lacrosse), manufacturing | |
| 3430 | Racks (e.g., bicycle, luggage, ski, tire), automotive, truck and bus, manufacturing | |
| 2811 | Racks (e.g., trash), fabricated metal plate, manufacturing | |
| 2029 | Racks for drying meat, wood, manufacturing | |
| 3610 | Racks, book and magazine, wood, manufacturing | |
| 2899 | Racks, household type, made from purchased wire | |
| 3610 | Racks, mail pouch, mailing, mail sorting (except wood), manufacturing | |
| 3610 | Racks, merchandise display and storage (except wood), manufacturing | |
| 3610 | Racks, merchandise display, wood, manufacturing | |
| 3610 | Racks, metal (e.g., mail pouch, mailing, mail sorting), manufacturing | |
| 9241 | Racquetball clubs | |
| 3312 | Radar detectors, manufacturing | |
| 5150 | Radar equipment, wholesale | |
| 6420 | Radar station operation | |