| NAICS code | NAICS Text
| SIC code | SIC Text
|
| 111160 | Rice Farming | 0112 | Rice |
| 2332 | Residential Building Construction | | |
| 2356 | Roofing, Siding, and Sheet Metal Contractors | | |
| 235610 | Roofing, Siding, and Sheet Metal Contractors | 1761 | Roofing, Siding, and Sheet Metal Work |
| 311212 | Rice Milling | 2044 | Rice Milling |
| 311212 | Rice Milling | 2099 | Food Preparations, NEC (rice, uncooked and packaged with other ingredients made in rice mills) |
| 311613 | Rendering and Meat Byproduct Processing | 2077 | Animal and Marine Fats and Oils (animal fats and oils) |
| 311613 | Rendering and Meat Byproduct Processing | 2013 | Sausages and Other Prepared Meats (lard made from purchased materials) |
| 311811 | Retail Bakeries | 5461 | Retail Bakeries (bread, cake and related products baked and sold on premise) |
| 311911 | Roasted Nuts and Peanut Butter Manufacturing | 2068 | Salted and Roasted Nuts and Seeds |
| 311911 | Roasted Nuts and Peanut Butter Manufacturing | 2099 | Food Preparations, NEC (peanut butter) |
| 314991 | Rope, Cordage, and Twine Mills | 2298 | Cordage and Twine |
| 316211 | Rubber and Plastics Footwear Manufacturing | 3021 | Rubber and Plastics Footwear |
| 321219 | Reconstituted Wood Product Manufacturing | 2493 | Reconstituted Wood Products |
| 3252 | Resin, Synthetic Rubber, and Artificial and Synthetic Fibers and Filaments Manufacturing | | |
| 325210 | Resin and Synthetic Rubber Manufacturing | | |
| 326192 | Resilient Floor Covering Manufacturing | 3069 | Fabricated Rubber Products, NEC (rubber resilient floor coverings) |
| 326192 | Resilient Floor Covering Manufacturing | 3996 | Linoleum, Asphalted-Felt-Base, and Other Hard Surface Floor Coverings, NEC |
| 3262 | Rubber Product Manufacturing | | |
| 326220 | Rubber and Plastics Hoses and Belting Manufacturing | 3052 | Rubber and Plastics Hose and Belting |
| 326291 | Rubber Product Manufacturing for Mechanical Use | 3061 | Molded, Extruded, and Lathe-Cut Mechanical Rubber Goods |
| 327320 | Ready-Mix Concrete Manufacturing | 3273 | Ready-Mixed Concrete |
| 331220 | Rolling and Drawing of Purchased Steel | | |
| 331221 | Rolled Steel Shape Manufacturing | 3312 | Steel Works, Blast Furnaces (including coke ovens), and Rolling Mills (hot rolling purchased steel) |
| 331221 | Rolled Steel Shape Manufacturing | 3316 | Cold-Rolled Steel Sheet, Strip and Bars |
| 331221 | Rolled Steel Shape Manufacturing | 3399 | Primary Metal Products, NEC (making ferrous metal powder, paste, and flake from purchased iron or steel) |
| 333516 | Rolling Mill Machinery and Equipment Manufacturing | 3547 | Rolling Mill Machinery and Equipment |
| 334220 | Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing | 3663 | Radio and Television Broadcasting and Communications Equipment |
| 334220 | Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing | 3679 | Electronic Components, NEC (antennas) |
| 335121 | Residential Electric Lighting Fixture Manufacturing | 3645 | Residential Electric Lighting Fixtures |
| 335121 | Residential Electric Lighting Fixture Manufacturing | 3999 | Manufacturing Industries, NEC (lamp shades of paper or textile) |
| 335314 | Relay and Industrial Control Manufacturing | 3625 | Relays and Industrial Controls |
| 3365 | Railroad Rolling Stock Manufacturing | | |
| 336510 | Railroad Rolling Stock Manufacturing | 3531 | Construction Machinery and Equipment (railway track maintenance equipment) |
| 336510 | Railroad Rolling Stock Manufacturing | 3743 | Railroad Equipment (except locomotive fuel lubricating or cooling medium pumps) |
| 421330 | Roofing, Siding, and Insulation Material Wholesalers | 5033 | Roofing, Siding, and Insulation Materials |
| 421740 | Refrigeration Equipment and Supplies Wholesalers | 5078 | Refrigeration Equipment and Supplies |
| 421930 | Recyclable Material Wholesalers | 5093 | Scrap and Waste Materials |
| 441210 | Recreational Vehicle Dealers | 5561 | Recreational Vehicle Dealers |
| 443112 | Radio, Television, and Other Electronics Stores | 5731 | Radio, Television, and Consumer Electronics Stores (except auto radios) |
| 443112 | Radio, Television, and Other Electronics Stores | 5999 | Miscellaneous Retail Stores, NEC (typewriters and telephones) |
| 443112 | Radio, Television, and Other Electronics Stores | 7622 | Radio and Television Repair Shops (retailing new radios and TVs from a storefront and repairing radios an |
| 44-450 | Retail Trade | | |
| 482 | Rail Transportation | | |
| 4821 | Rail Transportation | | |
| 482110 | Rail Transportation | | |
| 493120 | Refrigerated Warehousing and Storage | 4222 | Refrigerated Warehousing and Storage |
| 493120 | Refrigerated Warehousing and Storage | 4226 | Special Warehousing and Storage, NEC (fur storage) |
| 512210 | Record Production | 8999 | Services, NEC (record production) |
| 5131 | Radio and Television Broadcasting | | |
| 513110 | Radio Broadcasting | | |
| 513111 | Radio Networks | 4832 | Radio Broadcasting Stations (networks) |
| 513112 | Radio Stations | 4832 | Radio Broadcasting Stations (except networks) |
| 522292 | Real Estate Credit | 6111 | Foreign Trade and International Banking Institutions (Federal Land Banks) |
| 522292 | Real Estate Credit | 6162 | Mortgage Bankers and Loan Correspondents (mortgage bankers and originators) |
| 522292 | Real Estate Credit | 6159 | Miscellaneous Business Credit Institutions (farm mortgage companies) |
| 524130 | Reinsurance Carriers | 6311 | Life Insurance (reinsurers) |
| 524130 | Reinsurance Carriers | 6321 | Accident and Health Insurance (reinsurers) |
| 524130 | Reinsurance Carriers | 6324 | Hospital and Medical Service Plans (reinsurers) |
| 524130 | Reinsurance Carriers | 6331 | Fire, Marine, and Casualty Insurance (reinsurers) |
| 524130 | Reinsurance Carriers | 6351 | Surety Insurance (reinsurers) |
| 524130 | Reinsurance Carriers | 6361 | Title Insurance (reinsurers) |
| 525930 | Real Estate Investment Trusts | 6798 | Real Estate Investment Trusts |
| 53 | Real Estate and Rental and Leasing | | |
| 531 | Real Estate | | |
| 531310 | Real Estate Property Managers | | |
| 531311 | Residential Property Managers | 6531 | Real Estate Agents and Managers (managers-residential, real estate) |
| 532 | Rental and Leasing Services | | |
| 532292 | Recreational Goods Rental | 7999 | Amusement and Recreation Services, NEC (canoe, pleasure boats, bicycles, motorcycles, moped, go carts, et |
| 541710 | Research and Development in the Physical, Engineering, and Life Sciences | 3721 | Aircraft (research and development) |
| 541710 | Research and Development in the Physical, Engineering, and Life Sciences | 3724 | Aircraft Engines and Engine Parts (research and development) |
| 541710 | Research and Development in the Physical, Engineering, and Life Sciences | 3728 | Aircraft Parts and Auxiliary Equipment, NEC (research and development) |
| 541710 | Research and Development in the Physical, Engineering, and Life Sciences | 3761 | Guided missiles and Space Vehicles (research and development) |
| 541710 | Research and Development in the Physical, Engineering, and Life Sciences | 3764 | Guided missile and Space Vehicle Propulsion Units and Propulsion Unit Parts (research and development) |
| 541710 | Research and Development in the Physical, Engineering, and Life Sciences | 3769 | Guided Missile Space Vehicle Parts and Auxiliary Equipment, NEC (research and development) |
| 541710 | Research and Development in the Physical, Engineering, and Life Sciences | 8731 | Commercial Physical and Biological Research |
| 541710 | Research and Development in the Physical, Engineering, and Life Sciences | 8733 | Noncommercial Research Organizations (physical, engineering and life sciences) |
| 541720 | Research and Development in the Social Sciences and Humanities | 8732 | Commercial Economic, Sociological, and Educational Research (social sciences and humanities) |
| 541720 | Research and Development in the Social Sciences and Humanities | 8733 | Noncommercial Research Organizations (social sciences and humanities) |
| 561491 | Repossession Services | 7389 | Business Services, NEC (recovery and repossession services) |
| 5629 | Remediation and Other Waste Management Services | | |
| 562910 | Remediation Services | 1799 | Special Trade Contractors, NEC (asbestos abatement and lead paint removal contractors) |
| 562910 | Remediation Services | 4959 | Sanitary Services, NEC (remediation services) |
| 6232 | Residential Mental Retardation, Mental Health and Substance Abuse Facilities | | |
| 623210 | Residential Mental Retardation Facilities | 8052 | Intermediate Care Facilities (mental retardation facilities) |
| 623220 | Residential Mental Health and Substance Abuse Facilities | 8361 | Residential Care (mental health and substance abuse facilities) |
| 711212 | Racetracks | 7948 | Racing, Including Track Operations (track operations) |
| 7212 | RV (Recreational Vehicle) Parks and Recreational Camps | | |
| 721210 | RV (Recreational Vehicle) Parks and Recreational Camps | | |
| 721211 | RV (Recreational Vehicle) Parks and Campgrounds | 7033 | Recreational Vehicle Parks and Campgrounds |
| 721214 | Recreational and Vacation Camps (except Campgrounds) | 7032 | Sporting and Recreational Camps |
| 7213 | Rooming and Boarding Houses | | |
| 721310 | Rooming and Boarding Houses | 7021 | Rooming and Boarding Houses |
| 721310 | Rooming and Boarding Houses | 7041 | Organization Hotels and Lodging Houses, on Membership Basis (except hotels) |
| 811 | Repair and Maintenance | | |
| 811420 | Reupholstery and Furniture Repair | 7641 | Reupholstery and Furniture Repair (except antique furniture restoration) |
| 813 | Religious, Grantmaking, Civic, Professional, and Similar Organizations | | |
| 8131 | Religious Organizations | | |
| 813110 | Religious Organizations | 8661 | Religious Organizations |
| 926120 | Regulation and Administration of Transportation Programs | 9621 | Regulation and Administration of Transportation Programs (except air traffic control) |
| 926130 | Regulation and Administration of Communications, Electric, Gas, and Other Utilities | 9631 | Regulation and Administration of Communications, Electric, Gas, and Other Utilities |
| 926140 | Regulation of Agricultural Marketing and Commodities | 9641 | Regulation of Agricultural Marketing and Commodities |
| 926150 | Regulation, Licensing, and Inspection of Miscellaneous Commercial Sectors | 9651 | Regulation, Licensing, and Inspection of Miscellaneous Commercial Sectors |