| 3822 | Dairy machinery manufacturing | |
| 3112 | Dairy product manufacturing | |
| 5000 | Dam construction | |
| 8329 | Damask designing service | |
| 3211 | Damask manufacturing | |
| 9414 | Dance band | |
| 9490 | Dance hall, ballroom | |
| 9490 | Dance studio, ballroom | |
| 9310 | Dancing school | |
| 3909 | Darning needle, hand or machine, manufacturing | |
| 8323 | Data processing service | |
| 3825 | Dating device manufacturing | |
| 3909 | Dating stamp manufacturing | |
| 9340 | Day nursery | |
| 9310 | Deaf and dumb school | |
| 9200 | Debris removal service | |
| 3610 | Decalcomania work on china | |
| 3620 | Decalcomania work on glass | |
| 3909 | Decalcomania work, except on china or glass | |
| 3420 | Decalcomania, dry transfer, manufacturing | |
| 3420 | Deckling books, cards and paper | |
| 3610 | Decorating china | |
| 3610 | Decorating china to individual order | |
| 3903 | Decoy game call manufacturing | |
| 3824 | Degreaser, metal, manufacturing | |
| 1120 | Degumming cotton and other plant, contract | |
| 3121 | Dehydrated eggs manufacturing | |
| 3610 | Delftware, pottery, manufacturing | |
| 6200 | Deliveries, butter, to homes | |
| 6200 | Deliveries, milk, to homes | |
| 7114 | Delivery service | |
| 9310 | Denominational school | |
| 3851 | Density gauge manufacturing | |
| 3851 | Dental abrasive wheel manufacturing | |
| 3851 | Dental alloy manufacturing | |
| 3851 | Dental amalgam manufacturing | |
| 3851 | Dental cabinet manufacturing | |
| 3851 | Dental cement manufacturing | |
| 3851 | Dental compound manufacturing | |
| 3851 | Dental cutting instrument manufacturing | |