The International Standard Industrial Classification system of All Economic Activities (ISIC) is maintained by the United Nations (UN).
The structure of the ISIC is:
- 1. Agriculture, forestry and fishing
- 2. Mining and quarrying
- 3. Manufacturing
- 4. Electricity, gas, steam and air conditioning supply
- 5. Water supply; sewerage, waste management and remediation activities
- 6. Construction
- 7. Wholesale and retail trade; repair of motor vehicles and motorcycles
- 8. Transportation and storage
- 9. Accommodation and food service activities
- 10. Information and communication
- 11. Financial and insurance activities
- 12. Real estate activities
- 13. Professional, scientific and technical activities
- 14. Administrative and support service activities
- 15. Public administration and defence; compulsory social security
- 16. Education
- 17. Human health and social work activities
- 18. Arts, entertainment and recreation
- 19. Other service activities
- 20. Activities of households as employers; undifferentiated goods- and services-producing activities of households for own use
- 21. Activities of extraterritorial organizations and bodies