Category D
- Dairy Cattle Farming
- Dairy Herd Testing
- Dairy Products Wholesaling
- Dance Hall or Studio
- Dance School And Tuition
- Data Processing Service
- Data Recovery
- Dating And Introduction Agency
- Day Hospital
- Day Spa
- Debt Collecting Service
- Deer Breeding or Farming
- Defence Forces and Administration
- Delicatessens
- Dental Clinic
- Dental Emergency Services
- Dental Health Aids
- Dental Hygiene Service
- Dental Instruments or Equipment Manufacturing
- Dental Laboratories
- Dental Products and Supplies Manufacturing
- Dental Prosthetists
- Dental Services
- Dental Surgeon
- Dental Technicians
- Dentofacial Radiology Specialists
- Deodorant Manufacturing
- Department Store
- Dermatologist
- Dermatopathologist
- Desktop Publishing Service
- Detective and Investigator Services
- Detergent Manufacturing
- Diagnostic Apparatus Manufacturing
- Diagnostic Radiologist
- Diagnostic Ultrasound
- Diamond Merchants
- Diamond Mining
- Diamond, Gem or Lapidary Work
- Dietitian
- Digital Camera Equipment Repairs
- Dingo Hunting or Trapping
- Direct Marketing Services
- Direct Selling
- Disability Services
- Discount and Variety Stores
- Disinfectant Manufacturing
- Dispensing Equipment, Supplies And Service
- Display and Notice Boards Wholesaling
- Display Models Manufacturing
- Disposal Stores
- Distilling and Beverage Equipment Manufacturing
- Distilling Equipment Wholesaling
- Diving Equipment Manufacturing
- Diving Equipment Retailing
- DJ Services
- Document Destruction Services
- Dog Breeding
- Dog Obedience Training
- Dog Racing Trainers
- Dog Training for Farm Work
- Dog Walking Services
- Domestic Airline Operation
- Domestic Cleaning Services
- Domestic Goods and Appliance Hiring
- Domestic Hardware And Houseware Retail
- Doors or Windows Manufacturing
- Doughnuts Manufacturing
- Drafting Services
- Drainers
- Drama School
- Dredging
- Dressmaking And Supplies
- Drilling Contractors
- Drilling Machinery Manufacturing
- Drive in Cinema
- Driving School
- Drug Plants Growing
- Drug Rehabilitation Counselling Services
- Dry Cleaners and Laundry Services
- Dry Cleaning Machinery Manufacturing
- Dry Ice Manufacturing
- Drydock Operation
- Duck Farming
- Duty Free Stores
- Dyeing Service
- Dyes Manufacturing
- Dyes Wholesaling
