| 2423 | Dental wax, manufacturing | |
| 2424 | Dentifrices, manufacturing | |
| 5139 | Dentifrices, wholesale | |
| 8512 | Dentist | |
| 8512 | Dentist office | |
| 8512 | Dentistry | |
| 8030 | Dentistry schools | |
| 9112 | Dentists' associations | |
| 8512 | Dentists clinic, general practice | |
| 8512 | Dentists' offices, general practice | |
| 5139 | Dentists' professional supplies, wholesale | |
| 8512 | Dentists, offices and clinics of | |
| 2424 | Denture adhesives, manufacturing | |
| 2424 | Denture cleaners, effervescent, manufacturing | |
| 2423 | Denture materials, manufacturing | |
| 3311 | Dentures, custom made in dental laboratories | |
| 8519 | Denturists' offices | |
| 7493 | Deodorant servicing of rest rooms | |
| 2424 | Deodorants (except personal), manufacturing | |
| 5149 | Deodorants (except personal), wholesale | |
| 2424 | Deodorants, personal, manufacturing | |
| 5139 | Deodorants, personal, wholesale | |
| 4530 | Deodorization systems, installation | |
| 5219 | Department store (50 or more employees) | |
| 5219 | Department store (less than 50 employees) | |
| 5251 | Department store, catalogue sales office, retail | |
| 5219 | Department stores-retail | |
| 2424 | Depilatory preparations, manufacturing | |
| 9309 | Depilatory salons | |
| 2892 | Depolishing metals and metal products, for the trade | |
| 7521 | Deportation services | |
| 6519 | Deposit accepting financial intermediaries | |
| 6603 | Deposit insurance companies | |
| 6603 | Deposit or share insurance | |
| 6603 | Deposit protection funds | |
| 6519 | Deposit-accepting mortgage companies (except co-operative) | |
| 6519 | Deposit-accepting mortgage companies, co-operative | |
| 3311 | Depressors, tongue, manufacturing | |
| 2927 | Depth charge projectors, manufacturing | |
| 2927 | Depth charges, manufacturing | |